Hardware Tips                                                   

What is the most important spec for a Local AI PC in 2026?

 While GPU core counts are vital, the true performance engine for Large Language Models (LLMs) and Generative AI is 

Local AI models require massive amounts of data to be swapped between the memory and processor instantly; if your bandwidth is low, your high-end GPU will "idle" while waiting for data, leading to slow token generation. 

Furthermore, the sustained 100% load of AI inference generates extreme 

, making high-performance thermal management, such as an

, essential to prevent thermal throttling and maintain peak AI throughput.

VRAM Bandwidth vs. VRAM Capacity: The 2026 AI Performance Gap

In the era of Llama 4 and Stable Diffusion Ultra, many builders mistake "VRAM Capacity" (GB) for "AI Speed." While capacity determines if a model can 

LLMs perform billions of matrix multiplications. High-speed 

 found in the RTX 50-series provides the 1,000GB/s+ bandwidth necessary to generate text and images in real-time.

If your bandwidth is the bottleneck, increasing your GPU clock speed will yield zero performance gains. This is why professional AI workstations prioritize memory bus width and speed over raw TFLOPS.

Thermal Stress in AI Workloads: Solving the VRAM Hotspot Issue

Unlike gaming, which features fluctuating "burst" loads, 

 keeps your GPU and CPU at 100% utilization for minutes or even hours.

High-bandwidth operations generate intense heat within the memory modules. If your VRAM hits 95°C, the GPU BIOS will automatically "downclock" the memory frequency, causing your AI generation speed to drop by up to 40%.

AI workloads demand constant, high-wattage power. Utilizing an 

, ensures your system handles these continuous power draws without voltage ripples that could crash your AI model mid-calculation.

Cooling the AI Beast: Why You Need 360mm Liquid Cooling and Direct Airflow

To keep a Local AI PC stable during 24/7 training or inference, your thermal infrastructure must be top-tier.

While the GPU does the heavy lifting, the CPU handles data preprocessing and model sharding. A

 is critical to keep the CPU cool, ensuring it can feed data to the GPU fast enough to saturate the VRAM bandwidth.

In a 2026 AI build, traditional front-to-back airflow is often insufficient. Chassis like the 

 to blow cold air directly onto the GPU’s memory backplate, significantly lowering VRAM temperatures during long AI sessions.

Conclusion: In the AI Era, Thermal Stability is Performance

In 2026, building a PC for AI requires a shift in mindset. It’s no longer about peak burst speeds; it’s about 

sustained bandwidth and thermal endurance

. Without a high-end cooling foundation from darkFlash, your expensive AI-ready GPU will never reach its full potential.

Is your desktop ready for the AI revolution? Upgrade to

 high-performance cooling and power solutions

 to ensure your local LLMs run at maximum velocity without throttling.





What is the most important spec for a Local AI PC in 2026? While GPU core counts are vital, the true performance engine for Large Language Models (LLMs) and Generative AI is VRAM Bandwidth (GB/s). 

Local AI models require massive amounts of data to be swapped between the memory and processor instantly; if your bandwidth is low, your high-end GPU will "idle" while waiting for data, leading to slow token generation. 

Furthermore, the sustained 100% load of AI inference generates extreme VRAM hotspots, making high-performance thermal management, such as an AIO liquid cooler, essential to prevent thermal throttling and maintain peak AI throughput.



VRAM Bandwidth vs. VRAM Capacity: The 2026 AI Performance Gap





In the era of Llama 4 and Stable Diffusion Ultra, many builders mistake "VRAM Capacity" (GB) for "AI Speed." While capacity determines if a model can fit on your card, VRAM Bandwidth determines how fast it runs.



Data Throughput

LLMs perform billions of matrix multiplications. High-speed GDDR7 memory found in the RTX 50-series provides the 1,000GB/s+ bandwidth necessary to generate text and images in real-time.



The Memory Wall

If your bandwidth is the bottleneck, increasing your GPU clock speed will yield zero performance gains. This is why professional AI workstations prioritize memory bus width and speed over raw TFLOPS.



Thermal Stress in AI Workloads: Solving the VRAM Hotspot Issue





Unlike gaming, which features fluctuating "burst" loads, Local AI inference keeps your GPU and CPU at 100% utilization for minutes or even hours.



The Silent Killer: VRAM Overheating

High-bandwidth operations generate intense heat within the memory modules. If your VRAM hits 95°C, the GPU BIOS will automatically "downclock" the memory frequency, causing your AI generation speed to drop by up to 40%.



Sustained Power Delivery

AI workloads demand constant, high-wattage power. Utilizing an ATX 3.1 certified PSU, such as the darkFlash PMT Series, ensures your system handles these continuous power draws without voltage ripples that could crash your AI model mid-calculation.



Cooling the AI Beast: Why You Need 360mm Liquid Cooling and Direct Airflow

To keep a Local AI PC stable during 24/7 training or inference, your thermal infrastructure must be top-tier.



Preventing CPU Bottlenecks

While the GPU does the heavy lifting, the CPU handles data preprocessing and model sharding. A High-Performance AIO is critical to keep the CPU cool, ensuring it can feed data to the GPU fast enough to saturate the VRAM bandwidth.





(darkFlash DV360S MAX AIO Cooler)



The Side-Intake Advantage

In a 2026 AI build, traditional front-to-back airflow is often insufficient. Chassis like the darkFlash FLOATRON F1 PC Case utilize Side-Intake fans to blow cold air directly onto the GPU’s memory backplate, significantly lowering VRAM temperatures during long AI sessions.





(darkFlash FLOATRON F1 PC Case, with positive pressure configuration)



Conclusion: In the AI Era, Thermal Stability is Performance





In 2026, building a PC for AI requires a shift in mindset. It’s no longer about peak burst speeds; it’s about sustained bandwidth and thermal endurance. Without a high-end cooling foundation from darkFlash, your expensive AI-ready GPU will never reach its full potential.

Is your desktop ready for the AI revolution? Upgrade to high-performance cooling and power solutions to ensure your local LLMs run at maximum velocity without throttling.

Discover why VRAM bandwidth is the true engine of your local AI PC and how to prevent heat-induced slowdowns during 24/7 AI workloads.

The VRAM Bandwidth Trap: Why Your High-End GPU is Stuttering in Local AI Workloads

Hardware-Tipps

Erfahren Sie, warum die VRAM-Bandbreite der eigentliche Motor Ihres lokalen KI-PCs ist und wie Sie hitzebedingte Verlangsamungen bei KI-Workloads rund um die Uhr verhindern können.

Die VRAM-Bandbreitenfalle: Warum Ihre High-End-GPU bei lokalen KI-Workloads ruckelt

 In 2026, a safe CPU temperature is between 

 (149°F – 185°F) under load. While modern processors can handle higher heat, 

 where thermal throttling begins, cutting your performance to prevent hardware damage.

Standard CPU Temperature Ranges (2026 Standards)

To ensure system stability and peak clock speeds, aim for these 2026 temperature benchmarks:

 (203°F) during gaming, your cooling system is likely insufficient for the high thermal density of 2026-gen processors.

In 2026, Intel and AMD have different thermal ceilings for their flagship chips:

The official maximum junction temperature (

(Intel® Core™ Ultra 9 Processor 285K Max Operating Temperature, 

(203°F). The 3D V-Cache sensitive design requires stricter thermal management than standard CPUs.

(AMD Ryzen™ 9 9950X3D Max. Operating Temperature (Tjmax), 

Modern CPUs protect themselves through two primary self-governing mechanisms:

The CPU automatically reduces its clock speed (GHz). This results in sudden FPS drops, stuttering, and slower processing times.

If temperatures stay critical (e.g., pump failure), the PC will trigger a 

 or sudden reboot to prevent permanent silicon degradation.

If you aren't using monitoring software, watch for these physical "red flags" of an overheating CPU:

Fans ramping up to maximum RPM (jet engine sound) during minor tasks.

Frequent crashes, frozen screens, or "CPU Over Temperature" warnings at startup.

A noticeable "sluggish" feeling after extended gaming sessions due to prolonged throttling.

To track your thermals accurately, use these professional-grade 2026 monitoring solutions:

 to monitor real-time CPU temps directly on the water block without software overlays.

 for 10 minutes to identify the absolute maximum temperature your current cooler can sustain.

What Should You Do If Your CPU Is Too Hot?

If your temperatures consistently hit the 

(203°F+) limit, follow these three steps to fix the issue:

High-TDP CPUs like the Ultra 9 require premium liquid cooling. Solutions like the 

 offer the surface area needed for 2026-gen heat loads.

Ensure your Thermal Interface Material (TIM) is fresh. We recommend reapplying high-quality paste every 2 years.

. Even the best cooler will fail if it cannot exhaust hot air or pull in fresh, cool intake.





What is a safe CPU temperature? In 2026, a safe CPU temperature is between 65°C and 85°C (149°F – 185°F) under load. While modern processors can handle higher heat, 100°C (212°F) is the universal danger zone where thermal throttling begins, cutting your performance to prevent hardware damage.



Standard CPU Temperature Ranges (2026 Standards)

To ensure system stability and peak clock speeds, aim for these 2026 temperature benchmarks:





Idle: 30°C – 45°C (86°F – 113°F) (Ideal for light desktop use)



Gaming / Heavy Workload: 65°C – 85°C (149°F – 185°F) (Optimal performance range)



Maximum Limit: 95°C – 105°C (203°F – 221°F) (Thermal throttling threshold)







If your CPU consistently exceeds 95°C (203°F) during gaming, your cooling system is likely insufficient for the high thermal density of 2026-gen processors.



Max Temperature Limits: Intel vs. AMD

In 2026, Intel and AMD have different thermal ceilings for their flagship chips:



Intel Core Ultra 9 285K / 300 Series

The official maximum junction temperature (T-junction) is 105°C (221°F).





(Intel® Core™ Ultra 9 Processor 285K Max Operating Temperature, Intel Website)



AMD Ryzen 9 9950X3D

The maximum operating temperature (TjMax) is 95°C (203°F). The 3D V-Cache sensitive design requires stricter thermal management than standard CPUs.





(AMD Ryzen™ 9 9950X3D Max. Operating Temperature (Tjmax), AMD Website)



What Happens When a CPU Overheats?

Modern CPUs protect themselves through two primary self-governing mechanisms:



Thermal Throttling

The CPU automatically reduces its clock speed (GHz). This results in sudden FPS drops, stuttering, and slower processing times.



Emergency Thermal Shutdown

If temperatures stay critical (e.g., pump failure), the PC will trigger a Blue Screen of Death (BSOD) or sudden reboot to prevent permanent silicon degradation.







Signs Your CPU Is Running Too Hot

If you aren't using monitoring software, watch for these physical "red flags" of an overheating CPU:



Excessive Fan Noise

Fans ramping up to maximum RPM (jet engine sound) during minor tasks.



System Instability

Frequent crashes, frozen screens, or "CPU Over Temperature" warnings at startup.



Performance Degradation

A noticeable "sluggish" feeling after extended gaming sessions due to prolonged throttling.





(darkFlash UV360 Liquid CPU Cooler, with 6.67-inch curved screen)



How to Monitor CPU Temperatures

To track your thermals accurately, use these professional-grade 2026 monitoring solutions:



LCD Display Coolers

Use a darkFlash LCD AIO (like the UV360) to monitor real-time CPU temps directly on the water block without software overlays.



Advanced Software

Use HWiNFO or Core Temp for detailed per-core thermal data.



Stress Testing

Run Cinebench for 10 minutes to identify the absolute maximum temperature your current cooler can sustain.



What Should You Do If Your CPU Is Too Hot?



(darkFlash DV360S MAX Liquid CPU Cooler, with 3.95-inch IPS display)



If your temperatures consistently hit the 95°C+ (203°F+) limit, follow these three steps to fix the issue:



Upgrade Your Cooler

High-TDP CPUs like the Ultra 9 require premium liquid cooling. Solutions like the 360mm AIO Cooler offer the surface area needed for 2026-gen heat loads.



Reapply Thermal Paste

Ensure your Thermal Interface Material (TIM) is fresh. We recommend reapplying high-quality paste every 2 years.



Optimize Case Airflow

Switch to a High-Airflow Case. Even the best cooler will fail if it cannot exhaust hot air or pull in fresh, cool intake.

What is a safe CPU temperature? In 2026, a safe CPU temperature is between 65°C and 85°C under load.

CPU Temperature Guide: What Is the Safe Operating Range in 2026?

Was ist eine sichere CPU-Temperatur? Im Jahr 2026 liegt eine sichere CPU-Temperatur unter Last zwischen 65 °C und 85 °C.

CPU-Temperaturleitfaden: Was ist der sichere Betriebsbereich im Jahr 2026?

"24 Cores," "32 Threads"—CPU marketing is confusing. Do you really need a server-grade processor just to play 

? Or is a mid-range chip enough? In this guide, we strip away the jargon to explain the difference between 

, and reveal the one hidden factor that actually determines your FPS: 

What is the Difference Between Cores and Threads? 

To understand your computer, imagine your CPU is a 

Logical Threads = The Hands (Hyper-Threading)

Single-Core vs. Multi-Core Performance: Gaming vs. Streaming

Should you prioritize frequency (speed) or core count? It depends entirely on how you use your PC.

AMD RYZEN 7 9800X3D PROCESSOR REVIEW, Vmodtech

For Pure Gaming: Priority on Single-Core Speed

Most modern games still rely heavily on one "Main Thread." They prefer 

For Streaming & Content Creation: Priority on Thread Count

If you stream on Twitch via OBS, edit 4K videos, or have 50 Chrome tabs open while gaming, your "Kitchen" is crowded.

The Hidden Problem: Why High Core Counts Cause Overheating

Here is the fine print that spec sheets don't tell you: 

Modern CPUs use "Thermal Velocity Boost." They will automatically run faster, but only if they are cool enough. If you buy a high-end i9 or Ryzen 9 but pair it with a weak cooler, the CPU will hit 90°C instantly and Thermal Throttle (slow down). You paid for a Ferrari, but you're driving it in traffic.

darkFlash EXPLORE DE360 CPU Liquid Cooler

How to Prevent Thermal Throttling with darkFlash

Don't let heat waste your money. You must match your cooling solution to your core count:

 It absorbs the sudden heat spikes from multi-core workloads instantly, keeping your CPU boosting at max frequency for longer gaming sessions.





"24 Cores," "32 Threads"—CPU marketing is confusing. Do you really need a server-grade processor just to play Call of Duty? Or is a mid-range chip enough? In this guide, we strip away the jargon to explain the difference between Physical Cores and Logical Threads, and reveal the one hidden factor that actually determines your FPS: Cooling.



What is the Difference Between Cores and Threads? 

To understand your computer, imagine your CPU is a Restaurant Kitchen.







Physical Cores = The Chefs





A physical core is like a Chef. If you have 6 cores, you have 6 chefs. They can each handle a completely separate order independently.



Logical Threads = The Hands (Hyper-Threading)





Thanks to technology like Hyper-Threading (Intel) or SMT (AMD), each Chef can use both hands effectively. A thread isn't a new chef; it's just the ability to multitask better. It helps organize background tasks so the Chef never stops working.





Simple Rule: Cores do the heavy lifting (Gaming); Threads handle the background chaos (Discord, Chrome, Windows updates).



Single-Core vs. Multi-Core Performance: Gaming vs. Streaming

Should you prioritize frequency (speed) or core count? It depends entirely on how you use your PC.





(AMD RYZEN 7 9800X3D PROCESSOR REVIEW, Vmodtech)



For Pure Gaming: Priority on Single-Core Speed

Most modern games still rely heavily on one "Main Thread." They prefer Fast Cores over Many Cores.





The Sweet Spot: A high-speed 6-core or 8-core CPU is usually the perfect configuration for gaming.



The Reality: A 6-core chip running at 5.0GHz will often beat a 20-core chip running at 3.0GHz in pure FPS.



For Streaming & Content Creation: Priority on Thread Count

If you stream on Twitch via OBS, edit 4K videos, or have 50 Chrome tabs open while gaming, your "Kitchen" is crowded.





Here, extra cores and threads are vital. They handle the video encoding in the background so your game doesn't stutter.



The Hidden Problem: Why High Core Counts Cause Overheating

Here is the fine print that spec sheets don't tell you: High core counts generate massive heat.

Modern CPUs use "Thermal Velocity Boost." They will automatically run faster, but only if they are cool enough. If you buy a high-end i9 or Ryzen 9 but pair it with a weak cooler, the CPU will hit 90°C instantly and Thermal Throttle (slow down). You paid for a Ferrari, but you're driving it in traffic.





(darkFlash EXPLORE DE360 CPU Liquid Cooler)



How to Prevent Thermal Throttling with darkFlash

Don't let heat waste your money. You must match your cooling solution to your core count:





6 Cores (i5 / Ryzen 5): A high-quality Air Cooler is sufficient.



8+ Cores (i7 / i9 / Ryzen 7/9): You are entering the "Heat Zone." We strongly recommend a 360mm AIO Liquid Cooler, like the darkFlash EXPLORE DE360 CPU Liquid Cooler.



Why Liquid Cooling? It absorbs the sudden heat spikes from multi-core workloads instantly, keeping your CPU boosting at max frequency for longer gaming sessions.

More cores ≠ More FPS. Discover the one hidden factor that actually controls your gaming performance.

CPU Cores vs. Threads: What Do You Actually Need for Gaming?

Mehr Kerne bedeuten nicht automatisch mehr FPS. Entdecken Sie den einen, versteckten Faktor, der Ihre Gaming-Leistung tatsächlich beeinflusst.

CPU-Kerne vs. Threads: Was braucht man wirklich zum Spielen?

Build Guides                                                    

Your PC is running louder than usual, and your frame rates are dropping. You’ve cleaned the dust filters, checked your fans, but the temperatures are still creeping up. The culprit might be the most overlooked component in your build: 

Many users install their CPU cooler once and forget about it for years. However, thermal compound is not permanent. It degrades, dries out, and loses its effectiveness over time.

The Golden Rule: How Long Does Thermal Paste Actually Last?

There is no single expiration date for thermal paste, but there is a general consensus among hardware experts and manufacturers.

Cheaper silicon-based compounds tend to dry out ("cure") faster, leading to cracks and air gaps. Premium compounds often use higher-quality suspensions that stay liquid longer.

However, if you are a heavy user who pushes your PC to its limits (video editing, 4K gaming, AI rendering) daily, the heat cycles will degrade the paste faster than a PC used only for web browsing.

5 Signs Your PC Needs New Thermal Paste Immediately

Your PC will tell you when it’s suffering. If you notice any of these symptoms, it’s time to grab a tube of paste:

If your CPU sits at 50°C+ while doing nothing (and it used to be 35°C), the heat transfer is failing.

Are your fans ramping up to 100% speed just by opening a web browser? This suggests the cooler is struggling to pull heat away from the chip.

If your game suddenly lags or stutters after 30 minutes of play, your CPU/GPU might be slowing itself down to prevent damage.

Sudden shutdowns during intensive tasks are a major red flag.

If you remove your cooler for any reason, 

 replace the paste. Never reuse old paste.

CPU vs. GPU: Why Repasting a Graphics Card is Different

 is a standard maintenance task. It's low risk and easy to do.

In many regions, unscrewing your graphics card backplate may void the manufacturer's warranty.

GPUs often require dealing with delicate thermal pads for VRAM and VRMs in addition to the paste for the core.

Unlike CPUs, which have an Integrated Heat Spreader (IHS), GPU dies are exposed. One mistake in mounting pressure can crack the chip.

Repaste your CPU as regular maintenance. Only repaste your GPU if temperatures are critically high and the warranty has expired.

Why Does Thermal Paste Degrade? (The Pump-Out Effect)

Why doesn't it last forever? Two main reasons:

The solvents in the paste evaporate over time, turning the smooth liquid into a chalky, cracked solid that cannot transfer heat efficiently.

As your CPU/GPU heats up, it expands. When it cools down, it contracts. Over thousands of these heating/cooling cycles, the thermal paste is physically "pumped out" from the center of the chip towards the edges, leaving the hottest part of the processor with little coverage.

(Dried out thermal paste on CPU. Resource: 

Quick Guide: How to Remove and Apply Thermal Paste Correctly

Ready to refresh your PC? Follow these simple steps for the best results:

Use 99% Isopropyl Alcohol and a lint-free cloth (or coffee filter) to completely wipe away the old, crusty paste from both the CPU and the cooler cold plate.

 in the center of the CPU is the most foolproof method for most standard processors.

Tighten your cooler screws in a cross pattern (X pattern) to ensure the paste spreads evenly.

Thermal paste is cheap, but it plays a critical role in the longevity of your expensive hardware. By replacing it every 

, you ensure your PC runs quieter, cooler, and faster. Don't let a $5 dried-up paste ruin your $500 CPU!





Your PC is running louder than usual, and your frame rates are dropping. You’ve cleaned the dust filters, checked your fans, but the temperatures are still creeping up. The culprit might be the most overlooked component in your build: Thermal Paste. 



Many users install their CPU cooler once and forget about it for years. However, thermal compound is not permanent. It degrades, dries out, and loses its effectiveness over time.



The Golden Rule: How Long Does Thermal Paste Actually Last?

There is no single expiration date for thermal paste, but there is a general consensus among hardware experts and manufacturers.





Standard Thermal Paste: Every 2 to 3 years.



High-Performance / Premium Paste: Every 3 to 5 years.



Factory-Applied Paste (Pre-built PCs/Laptops): Often lower quality, recommended to replace after 2 years.

Why the difference? 

Cheaper silicon-based compounds tend to dry out ("cure") faster, leading to cracks and air gaps. Premium compounds often use higher-quality suspensions that stay liquid longer.

However, if you are a heavy user who pushes your PC to its limits (video editing, 4K gaming, AI rendering) daily, the heat cycles will degrade the paste faster than a PC used only for web browsing.







5 Signs Your PC Needs New Thermal Paste Immediately

Your PC will tell you when it’s suffering. If you notice any of these symptoms, it’s time to grab a tube of paste:



Rising Idle Temperatures

If your CPU sits at 50°C+ while doing nothing (and it used to be 35°C), the heat transfer is failing.



Sudden Fan Noise

Are your fans ramping up to 100% speed just by opening a web browser? This suggests the cooler is struggling to pull heat away from the chip.



Thermal Throttling

If your game suddenly lags or stutters after 30 minutes of play, your CPU/GPU might be slowing itself down to prevent damage.



System Crashes

Sudden shutdowns during intensive tasks are a major red flag.



Visual Inspection

If you remove your cooler for any reason, always replace the paste. Never reuse old paste.







CPU vs. GPU: Why Repasting a Graphics Card is Different

Replacing thermal paste on a CPU is a standard maintenance task. It's low risk and easy to do.

However, repasting a GPU is a different beast:



Warranty Risks

In many regions, unscrewing your graphics card backplate may void the manufacturer's warranty.



Complexity

GPUs often require dealing with delicate thermal pads for VRAM and VRMs in addition to the paste for the core.



Direct Die Contact

Unlike CPUs, which have an Integrated Heat Spreader (IHS), GPU dies are exposed. One mistake in mounting pressure can crack the chip.



Our Advice

Repaste your CPU as regular maintenance. Only repaste your GPU if temperatures are critically high and the warranty has expired.







Why Does Thermal Paste Degrade? (The Pump-Out Effect)

Why doesn't it last forever? Two main reasons:



Drying Out

The solvents in the paste evaporate over time, turning the smooth liquid into a chalky, cracked solid that cannot transfer heat efficiently.



The Pump-Out Effect

As your CPU/GPU heats up, it expands. When it cools down, it contracts. Over thousands of these heating/cooling cycles, the thermal paste is physically "pumped out" from the center of the chip towards the edges, leaving the hottest part of the processor with little coverage.





(Dried out thermal paste on CPU. Resource: CPU Ninja)



Quick Guide: How to Remove and Apply Thermal Paste Correctly

Ready to refresh your PC? Follow these simple steps for the best results:



Clean the Old Paste

Use 99% Isopropyl Alcohol and a lint-free cloth (or coffee filter) to completely wipe away the old, crusty paste from both the CPU and the cooler cold plate.







Apply the Right Amount

You don't need much. A pea-sized dot in the center of the CPU is the most foolproof method for most standard processors.







Mount Pressure

Tighten your cooler screws in a cross pattern (X pattern) to ensure the paste spreads evenly.





(darkFlash DN360D Liquid CPU Cooler)



Pro Tip: 

Even the best CPU Cooler or AIO Liquid Cooler cannot perform well if the thermal paste is dry.



Conclusion

Thermal paste is cheap, but it plays a critical role in the longevity of your expensive hardware. By replacing it every 2 to 3 years, you ensure your PC runs quieter, cooler, and faster. Don't let a $5 dried-up paste ruin your $500 CPU!





(darkFlash DN360D Liquid CPU Cooler)

If your PC is running hotter or louder than usual, it might be time to replace your thermal paste.

How Often Should You Replace Thermal Paste? The Ultimate Guide for CPUs and GPUs

Bauanleitungen

Wenn Ihr PC heißer oder lauter als gewöhnlich läuft, ist es möglicherweise an der Zeit, die Wärmeleitpaste zu erneuern.

Wie oft sollte man die Wärmeleitpaste wechseln? Der ultimative Leitfaden für CPUs und GPUs.

Tech News                                                       

Over the past year, the memory market has seen an unexpected twist: DDR4, once considered an “outdated” standard, has experienced a dramatic price surge and regained attention from both consumers and industry players. 

While DDR5 was expected to completely dominate by now, DDR4 is proving to be far from obsolete. In this article, we’ll explore the reasons behind DDR4’s surprising comeback and what it means for PC users and the industry.

Leading memory manufacturers like Samsung, Micron, and SK hynix have gradually reduced DDR4 production capacity, shifting resources toward DDR5 and advanced technologies like HBM. As supply tightens, DDR4 modules have become scarcer, driving prices upward.

ChangXin Memory Technologies (CXMT), which once pushed DDR4 prices down by adding extra supply, has also shifted focus to DDR5 in 2025. With fewer manufacturers supporting DDR4, the market balance has swung from oversupply to shortage.

When buyers fear future shortages, they tend to stock up early. PC builders, distributors, and even end-users have been buying DDR4 aggressively, adding further pressure on limited supply.

In a rare twist, DDR4 has in some cases become more expensive than DDR5. Reports have shown DDR4 chips trading at higher prices per gigabyte compared to DDR5, a clear sign of supply-demand imbalance rather than technical merit.

Millions of systems worldwide still rely on DDR4 platforms. For many users, replacing an entire CPU and motherboard just to switch to DDR5 isn’t cost-effective, making DDR4 upgrades the logical choice.

While DDR5 offers higher bandwidth and future scalability, DDR4 remains more than capable for everyday workloads, gaming, and office use. For many, the performance difference isn’t worth the cost of a full platform upgrade.

Upgrading to DDR5 means investing in a new motherboard and often a new CPU. Sticking with DDR4 is a simpler, cheaper upgrade path.

Many DDR4 kits still come with advanced heat spreaders, RGB lighting, and sleek designs, offering strong appeal to gamers and PC builders focused on aesthetics as much as performance.

The DDR4 revival is not simply nostalgia — it’s the result of shrinking supply, platform compatibility, and short-term market behavior. While DDR5 remains the future of memory, DDR4 continues to prove its relevance in 2025.

For PC users, this moment highlights the importance of timing upgrades carefully. DDR4 still offers strong value and compatibility today, but its long-term availability is uncertain. In the fast-moving world of PC hardware, sometimes yesterday’s standard still has a surprising role to play.





Over the past year, the memory market has seen an unexpected twist: DDR4, once considered an “outdated” standard, has experienced a dramatic price surge and regained attention from both consumers and industry players. 

While DDR5 was expected to completely dominate by now, DDR4 is proving to be far from obsolete. In this article, we’ll explore the reasons behind DDR4’s surprising comeback and what it means for PC users and the industry.



Why Are DDR4 Prices Rising?



(DRAM Avg. Spot Price – Chart credit: TrendForce on X)



Shrinking Supply

Leading memory manufacturers like Samsung, Micron, and SK hynix have gradually reduced DDR4 production capacity, shifting resources toward DDR5 and advanced technologies like HBM. As supply tightens, DDR4 modules have become scarcer, driving prices upward.



Chinese Manufacturer Transition

ChangXin Memory Technologies (CXMT), which once pushed DDR4 prices down by adding extra supply, has also shifted focus to DDR5 in 2025. With fewer manufacturers supporting DDR4, the market balance has swung from oversupply to shortage.



Stockpiling and Panic Buying

When buyers fear future shortages, they tend to stock up early. PC builders, distributors, and even end-users have been buying DDR4 aggressively, adding further pressure on limited supply.



Price Inversion

In a rare twist, DDR4 has in some cases become more expensive than DDR5. Reports have shown DDR4 chips trading at higher prices per gigabyte compared to DDR5, a clear sign of supply-demand imbalance rather than technical merit.



Why Is DDR4 Still Popular?





Massive Installed Base

Millions of systems worldwide still rely on DDR4 platforms. For many users, replacing an entire CPU and motherboard just to switch to DDR5 isn’t cost-effective, making DDR4 upgrades the logical choice.



Good Enough Performance

While DDR5 offers higher bandwidth and future scalability, DDR4 remains more than capable for everyday workloads, gaming, and office use. For many, the performance difference isn’t worth the cost of a full platform upgrade.



Compatibility and Cost Barriers

Upgrading to DDR5 means investing in a new motherboard and often a new CPU. Sticking with DDR4 is a simpler, cheaper upgrade path.



Market Perception and Aesthetics

Many DDR4 kits still come with advanced heat spreaders, RGB lighting, and sleek designs, offering strong appeal to gamers and PC builders focused on aesthetics as much as performance.



Risks and Future Outlook









Uncertain Longevity: If DDR5 production continues to ramp up and prices fall, DDR4 could quickly lose its renewed momentum.



Volatile Prices: With fewer manufacturers producing DDR4, supply fluctuations could lead to unstable pricing.



Short-Term Popularity: The current surge may be temporary, driven by stockpiling and panic buying rather than sustainable long-term demand.



Conclusion

The DDR4 revival is not simply nostalgia — it’s the result of shrinking supply, platform compatibility, and short-term market behavior. While DDR5 remains the future of memory, DDR4 continues to prove its relevance in 2025.



For PC users, this moment highlights the importance of timing upgrades carefully. DDR4 still offers strong value and compatibility today, but its long-term availability is uncertain. In the fast-moving world of PC hardware, sometimes yesterday’s standard still has a surprising role to play.

This article explores the supply cuts, market shifts, and user demand that fueled DDR4's comeback.

DDR4's Comeback: Why Prices Are Surging and Popularity Is Rising Again

Techniknachrichten

Dieser Artikel untersucht die Angebotskürzungen, Marktveränderungen und die Nachfrage der Nutzer, die das Comeback von DDR4 ermöglichten.

DDR4 feiert sein Comeback: Warum die Preise steigen und die Beliebtheit wieder zunimmt

When building a gaming PC on a tight budget, many players tend to maximize their GPU spending while opting for an entry-level CPU. Is this combination really worth it? Is a GPU the only critical component for a gaming rig? 

 conducted real-world testing using a low-end CPU paired with a high-end GPU, utilizing the i3-12100F and i9-12900KS with an RTX 3080 as their testing platform.

 compared to the i3-12100F, representing nearly a 

. This clearly shows that a high-end CPU is necessary to fully unleash the potential of a high-end GPU.

↑ Rainbow Six: Siege 1080P FPS Performance (Source: 

, the performance gap starts to narrow, but there is still an average FPS difference of 17, translating to nearly a 

↑ Rainbow Six: Siege 2K FPS Performance (Source: 

, the performance difference between the high-end and low-end CPUs becomes negligible, primarily because the GPU becomes the bottleneck, limiting further FPS gains.

↑ Rainbow Six: Siege 4K FPS Performance (Source: 

, even in Assassin’s Creed: Valhalla, the minimum FPS sees a 

↑ Assassin’s Creed: Valhalla 1080P FPS Performance (Source: 

↑ Assassin’s Creed: Valhalla 2K FPS Performance (Source: 

Similar to Rainbow Six: Siege, as the resolution increases to 

, the performance differences continue to shrink due to GPU limitations.

↑ Assassin’s Creed: Valhalla 4K FPS Performance (Source: 

Is It Worth Using a Low-End CPU with a High-End GPU?

, then pairing a low-end CPU with a high-end GPU is 

, as the GPU will be the main performance limiter. 

However, if your PC is also used for other tasks like streaming, content creation, or multitasking, a 

For first-time DIY builders, here are commonly recommended CPU and GPU pairings:

highly recommended to balance the performance of both components

 to avoid a low CPU, high GPU situation that can prevent your components from reaching their full potential. Balanced pairings will ensure your parts work synergistically rather than bottlenecking each other.





When building a gaming PC on a tight budget, many players tend to maximize their GPU spending while opting for an entry-level CPU. Is this combination really worth it? Is a GPU the only critical component for a gaming rig? 

Japanese media outlet PC Watch conducted real-world testing using a low-end CPU paired with a high-end GPU, utilizing the i3-12100F and i9-12900KS with an RTX 3080 as their testing platform.



Test Platform





Motherboard: Intel Z690



Memory: DDR5-4800 16GBx2



GPU: NVIDIA GeForce RTX 3080



SSD: M.2 NVMe (PCIe 4.0x4, 1TB)



CPU Cooler: AIO liquid cooler (360mm)



PSU: ATX 1000W (80 PLUS GOLD)



Gaming Benchmark Results





Rainbow Six: Siege

In Rainbow Six: Siege at 1080P with maximum settings, the i9-12900KS delivered 171 FPS higher on average compared to the i3-12100F, representing nearly a 47% increase. This clearly shows that a high-end CPU is necessary to fully unleash the potential of a high-end GPU.





Note: Since the test result images are in Japanese, we have provided a simple English translation for them.





↑ Rainbow Six: Siege 1080P FPS Performance (Source: PC Watch)



At 2K resolution, the performance gap starts to narrow, but there is still an average FPS difference of 17, translating to nearly a 10% performance increase compared to the lower-end CPU.





↑ Rainbow Six: Siege 2K FPS Performance (Source: PC Watch)



When the resolution is increased to 4K, the performance difference between the high-end and low-end CPUs becomes negligible, primarily because the GPU becomes the bottleneck, limiting further FPS gains.





↑ Rainbow Six: Siege 4K FPS Performance (Source: PC Watch)





Note: The test results are from 2022, and Rainbow Six: Siege has now been updated to Rainbow Six: Siege X.







Assassin’s Creed: Valhalla

What about open-world games?

At 1080P, even in Assassin’s Creed: Valhalla, the minimum FPS sees a performance increase of over 30% with the high-end CPU.





↑ Assassin’s Creed: Valhalla 1080P FPS Performance (Source: PC Watch)





↑ Assassin’s Creed: Valhalla 2K FPS Performance (Source: PC Watch)



Similar to Rainbow Six: Siege, as the resolution increases to 2K and 4K, the performance differences continue to shrink due to GPU limitations.





↑ Assassin’s Creed: Valhalla 4K FPS Performance (Source: PC Watch)



Is It Worth Using a Low-End CPU with a High-End GPU?

If your PC is solely for gaming at 4K resolution, then pairing a low-end CPU with a high-end GPU is feasible, as the GPU will be the main performance limiter. 

However, if your PC is also used for other tasks like streaming, content creation, or multitasking, a balanced CPU and GPU pairing is recommended for better overall system performance.



Recommended Pairings

For first-time DIY builders, here are commonly recommended CPU and GPU pairings:



Entry-Level:





Intel: Ultra 5 series CPU + RTX 5060 / 5060 Ti



AMD: Ryzen 5 series CPU + RX 7650 GRE

Mid-Range:





Intel: Ultra 7 series CPU + RTX 5070 / 5070 Ti



AMD: Ryzen 7 series CPU + RX 9060 XT

High-End:





Intel: Ultra 9 series CPU + RTX 5080 / 5090



AMD: Ryzen 9 series CPU + RX 9070 / 9070 XT







Conclusion

When pairing your CPU and GPU, it is highly recommended to balance the performance of both components to avoid a low CPU, high GPU situation that can prevent your components from reaching their full potential. Balanced pairings will ensure your parts work synergistically rather than bottlenecking each other.

Make sure your CPU can fully unleash its performance. As for how it will perform together, let’s break it down for you in one go!

What Happens When You Pair a Low-End CPU with a High-End GPU?

Stellen Sie sicher, dass Ihre CPU ihr volles Leistungspotenzial ausschöpfen kann. Wie die einzelnen Komponenten im Zusammenspiel funktionieren, erklären wir Ihnen im Folgenden.

Was passiert, wenn man eine Einsteiger-CPU mit einer High-End-GPU kombiniert?

How-to Guides                                                   

While many modern games come with built-in benchmarks to help you instantly assess whether your system runs the game smoothly or if settings are too high or too low, not everyone buys a PC just for gaming. For productivity or professional use, third-party benchmarking tools are a better way to measure your system's performance through detailed data.

Developed by Maxon, Cinebench R23 is a free CPU benchmarking tool that evaluates both single-core and multi-core performance using the Cinema 4D rendering engine to simulate real 3D scene rendering. It’s one of the most widely used benchmarking standards in the industry and among DIY enthusiasts. Bonus: It also supports macOS!

Created by CPUID, CPU-Z is a popular tool for viewing detailed hardware information. It also includes a built-in benchmark module that tests both single-core and multi-core performance using compute-heavy tasks. Unlike Cinebench, it doesn’t simulate real-world scenarios but provides quick and simple performance data.

3DMark is a professional-grade benchmarking tool for testing GPU and overall system performance. It can simulate gaming scenarios, heavy graphics rendering, ray tracing, and more—providing a performance score based on your hardware.In addition to GPU tests (like ray tracing and DirectX 12), it can also evaluate CPU performance. 3DMark is an all-in-one solution, but it comes with a price tag.

FurMark is a stress-testing tool specifically for GPUs. It pushes your graphics card to its limits with a highly demanding "furry donut" rendering, helping you test stability, temperature, and cooling efficiency. This type of testing is often referred to as a “burn-in test.” Thanks to its signature rotating donut graphics, FurMark is jokingly nicknamed "the donut test."





While many modern games come with built-in benchmarks to help you instantly assess whether your system runs the game smoothly or if settings are too high or too low, not everyone buys a PC just for gaming. For productivity or professional use, third-party benchmarking tools are a better way to measure your system's performance through detailed data.



Recommended CPU Benchmark Tools

Cinebench R23 – Free

Developed by Maxon, Cinebench R23 is a free CPU benchmarking tool that evaluates both single-core and multi-core performance using the Cinema 4D rendering engine to simulate real 3D scene rendering. It’s one of the most widely used benchmarking standards in the industry and among DIY enthusiasts. Bonus: It also supports macOS!







CPU-Z Benchmark – Free

Created by CPUID, CPU-Z is a popular tool for viewing detailed hardware information. It also includes a built-in benchmark module that tests both single-core and multi-core performance using compute-heavy tasks. Unlike Cinebench, it doesn’t simulate real-world scenarios but provides quick and simple performance data.







Recommended GPU Benchmark Tools

3DMark Benchmark – Paid

3DMark is a professional-grade benchmarking tool for testing GPU and overall system performance. It can simulate gaming scenarios, heavy graphics rendering, ray tracing, and more—providing a performance score based on your hardware.In addition to GPU tests (like ray tracing and DirectX 12), it can also evaluate CPU performance. 3DMark is an all-in-one solution, but it comes with a price tag.







FurMark Benchmark – Free

FurMark is a stress-testing tool specifically for GPUs. It pushes your graphics card to its limits with a highly demanding "furry donut" rendering, helping you test stability, temperature, and cooling efficiency. This type of testing is often referred to as a “burn-in test.” Thanks to its signature rotating donut graphics, FurMark is jokingly nicknamed "the donut test."





Get to Know the 4 Most Popular Benchmarking Tools for Testing CPUs and GPUs Today.

Recommended Software for Testing CPU and GPU Performance

Anleitungen

Lernen Sie die 4 beliebtesten Benchmarking-Tools zum Testen von CPUs und GPUs kennen.

Empfohlene Software zum Testen der CPU- und GPU-Leistung

As a gamer, you may have come across recommendations online for AMD’s X3D series processors. Thanks to the use of AMD’s 3D V-Cache technology, these processors offer exceptional gaming performance. But what exactly is 3D V-Cache technology, and how can the X3D series benefit gamers?

3D V-Cache is an advanced 3D packaging technique that stacks cache memory directly on top of the CPU. This innovation helps alleviate cache memory bottlenecks. The main advantage is the increased cache capacity, which reduces performance losses caused by cache misses.

| Advantages of the X3D Series Processors |

The X3D processors feature larger cache memory, optimizing memory access during gaming and resulting in higher frame rates.

To balance heat dissipation, the base frequency of X3D processors is slightly lower than that of their standard counterparts in the same generation.

↑ The X3D series CPUs can deliver higher gaming frame rates.(From 

| Who Should Consider Purchasing X3D Series Processors? |

Given the larger cache memory capacity of the X3D processors, they are primarily beneficial for gamers. However, they don’t offer significant advantages for productivity tasks or content creators. If your PC needs are focused on productivity or content creation, the X3D series may not be the best choice.





As a gamer, you may have come across recommendations online for AMD’s X3D series processors. Thanks to the use of AMD’s 3D V-Cache technology, these processors offer exceptional gaming performance. But what exactly is 3D V-Cache technology, and how can the X3D series benefit gamers?



| What is 3D V-Cache Technology? |

3D V-Cache is an advanced 3D packaging technique that stacks cache memory directly on top of the CPU. This innovation helps alleviate cache memory bottlenecks. The main advantage is the increased cache capacity, which reduces performance losses caused by cache misses.





↑ Image Credit: Geek Bay



| Advantages of the X3D Series Processors |

1.Gaming Performance: 

The X3D processors feature larger cache memory, optimizing memory access during gaming and resulting in higher frame rates.



2.Lower Power Consumption: 

To balance heat dissipation, the base frequency of X3D processors is slightly lower than that of their standard counterparts in the same generation.





↑ The X3D series CPUs can deliver higher gaming frame rates.(From Geek Bay YT)



| Who Should Consider Purchasing X3D Series Processors? |

Given the larger cache memory capacity of the X3D processors, they are primarily beneficial for gamers. However, they don’t offer significant advantages for productivity tasks or content creators. If your PC needs are focused on productivity or content creation, the X3D series may not be the best choice.



| X3D vs. Non-X3D Series Processors |





| The New Ryzen 7 9800X3D Improves on the Zen3 and Zen4 Weaknesses |

Earlier Zen3 and Zen4 X3D processors stacked the cache memory on top of the CPU core, leading to inefficient heat dissipation. This design prevented the CPU core from directly contacting the top cover, which caused cooling issues. The new Ryzen 7 9800X3D has swapped the positions of the CPU core and cache memory, allowing the core to directly contact the top cover. This change not only solves the heat buildup problem but also allows the X3D series to achieve higher processor clock speeds.



Check out the Ryzen 7 9800X3D Introduction Video



The AMD X3D series processors use advanced packaging technology to stack cache memory, improving CPU performance, especially in gaming scenarios.

What Sets AMD X3D Processors Apart from Regular CPUs?

Die Prozessoren der AMD X3D-Serie nutzen eine fortschrittliche Packaging-Technologie zum Stapeln des Cache-Speichers, wodurch die CPU-Leistung, insbesondere in Spiele-Szenarien, verbessert wird.