Alphacool
Alphacool Subzero Thermal Grease 20g
Best high-performance thermal paste for enthusiasts seeking maximum cooling efficiency.
Achieve optimum system performance with the Alphacool Subzero Thermal Grease. This high-performance thermal paste is engineered for users demanding the best, boasting an impressive thermal conductivity of 16 W/mK, rivaled only by liquid metal compounds. Delivered in a convenient 20g applicator with a screw cap for easy storage, this non-conductive and non-caustic formula ensures hardware safety even with minor spills. Its high viscosity allows for optimal application, aided by the included plastic spatula. Featuring anti-oxidation properties, this paste resists drying out, ensuring long-term reliability and consistent cooling efficiency.
$42.95
Owner Satisfaction
4.5
/ 5
Category Rank
866
/ 3605
#866 in Computer System Cooling Parts
Price vs Category Average
-72%
Below average
Thermal Conductivity
16
/ W/m-K
Who it's for
- Overclockers pushing high-TDP hardware to the absolute limit
- System builders managing multiple rigs or large cooling blocks
- DIY enthusiasts worried about accidental spills on sensitive circuitry
Who should skip it
- Users preferring an easy, mess-free application process
- Impatient builders wanting peak performance immediately after installation
- Casual users only needing a small amount for one PC
Performance breakdown
Thermal Conductivity
Industry-leading 16 W/mK rating rivals the performance of liquid metal solutions.
Application Ease
High viscosity and the included spatula ensure a clean, precise spread.
Hardware Safety
Non-conductive and non-caustic formula eliminates risks of short-circuiting your components.
Long-term Stability
Anti-oxidation properties prevent drying and maintain efficiency over extended usage periods.
Storage Convenience
Generous 20g volume in a resealable applicator offers excellent value for enthusiasts.
Temperature Versatility
Handles extreme thermal ranges from -50°C to 200°C with total reliability.
Key Specs
Thermal Conductivity
16 W/m-K
Content
20g (sufficient for several applications)
Viscosity
3,000,000 mPa. s
Temperature Stability
-50°C to 200°C
Density
2.7 g/cm³
Shelf Life
2 years
Dielectric Constant
14.5 at 1MHz
Thermal Resistance
0.05 °C*cm²/W at 60Psi
Features
- High thermal conductivity of 16 W/mK
- Electrically non-conductive and non-caustic
- High viscosity for optimal application
- Includes plastic spatula for perfect spreading
- Resists drying out and solidifying
- Comes in a resealable storage applicator
- Features anti-oxidation properties
What customers say
PC enthusiasts highly favor Alphacool Subzero Thermal Grease for its exceptional thermal conductivity, delivering significant temperature reductions, especially with demanding components. Users confirm the 'Subzero' performance lives up to its name. The generous 20g quantity is frequently cited as providing outstanding long-term value, justifying the initial cost for frequent builders. A consistent point noted is the paste's high viscosity, which ensures excellent coverage but requires careful application, potentially challenging newer users. Overall, the consensus praises this high volume solution for reliably delivering extreme cooling efficiency.
Know before you buy
Yes. The formula is electrically non-conductive and non-caustic, meaning it will not cause short circuits or damage your hardware if minor spills occur during application.
A thermal conductivity of 16 W/mK is exceptionally high for a non-metallic paste, placing it in the top tier of performance. It offers cooling efficiency that rivals liquid metal compounds without the associated risks of electrical conductivity.
While the high viscosity makes the paste thicker than entry-level options, it is designed to stay exactly where you place it. We include a plastic spatula to help you spread an even, thin layer across your CPU or GPU heat spreader.
The paste has a shelf life of two years. Thanks to its anti-oxidation properties and the included resealable screw cap, it is designed to resist drying out and solidifying between uses.
The Subzero thermal grease is rated for a temperature range of -50°C to 200°C. It is well-suited for high-performance systems and overclocking, though it is primarily engineered for standard high-end cooling setups.
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$43