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For AMD Ryzen R7 9700X Desktop PC CPU Processor AM5
$561.54$567.21
Best Thermal Paste on AliExpress
A $3 tube of thermal paste can drop your CPU temps by 5-10°C — AliExpress offers name-brand pastes at budget prices.
Thermal paste is one of the best value PC upgrades. AliExpress offers name-brand pastes (Arctic MX-6, Thermal Grizzly, Cryorig) at prices much lower than local retailers.
What to Look For
Key factors to consider before buying on AliExpress
🌡️
Thermal Conductivity (W/mK)
Higher W/mK = better heat transfer. Budget pastes: 4-6 W/mK (Arctic MX-4). Mid: 6-8 W/mK (Arctic MX-6, Kryonaut). High-end: 10+ W/mK (Kryonaut Extreme, Liquid Metal).
⏱️
Longevity & Pump-out Effect
Some pastes degrade quickly under high heat cycles. Kryonaut suffers from pump-out on direct-die (laptops). MX-6 and Cooler Master MasterGel are more durable for long-term use.
💧
Application Method
Pea-sized dot in the center is standard for desktop CPUs. Spread thin for GPUs and direct-die. Liquid metal requires electrical insulation of nearby components.
Price Guide
What to expect at different price points
2
Budget PasteUnder $2
Syrba, basic pastes. 4-6 W/mK. Good for general use and temporary builds. One application per tube.
2
Quality Paste$2–$6
Arctic MX-4/MX-6 (~$3-5). 6+ W/mK, good longevity. Best value for most users.
$
Premium Paste$6+
Thermal Grizzly Kryonaut, Cooler Master MasterGel Pro. 10+ W/mK. Best for overclocking or high-TDP CPUs.
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Frequently Asked Questions
Q1Is expensive thermal paste worth it?
Arctic MX-6 at $3-5 is the sweet spot. More expensive pastes (Kryonaut) offer 1-2C improvement — not worth it for stock CPUs but useful for overclocking.
Q2How often should I replace thermal paste?
Every 2-3 years, or whenever you remove the cooler. If CPU temps rise 5-10C, its time for a replacement.
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