Polartherm X8 40g Thermal Paste

Stock up on reliable thermal compound with Polartherm X8 40g thermal paste (Link opens Polartherm product page). This bulk 40g package offers an outstanding price-performance ratio, ideal for system integrators, repair shops, and frequent DIY builders working with mainstream systems. Born from German innovation, the X8 features a low-viscosity formula for extremely easy application. Specifically, it provides very good thermal conductivity and high durability for processors up to 70W TDP.
Discover Polartherm X8 40g
Designed for convenience and performance, the Polartherm X8 uses a silicone oil-based carrier with aluminum and zinc oxide powder. Its key advantage is its low viscosity, making application incredibly simple – it often spreads effectively just from the cooler’s mounting pressure. This makes Polartherm X8 40g exceptionally user-friendly, even though applicator tools are included.

This thermal paste delivers high thermal conductivity suitable for processors with a Thermal Dissipation Power (TDP) up to 70 watts, covering popular mainstream series like Intel® Core™ i3/i5 & Core™ Ultra 3/5, and AMD Ryzen™ 3 & 5. While its lower viscosity might offer slightly less resistance to the “pump-out effect” compared to the higher-viscosity X10 over extreme long-term use on hotter chips, the Polartherm X8 40g provides reliable high durability for its intended applications. Find compatible mainstream CPUs here.
Optimized for CPU and GPU cooling in standard air and liquid cooling systems, Polartherm X8 is a versatile workhorse. Its non-electrically conductive formula (0 pS/m) ensures safety during application. This large 40g quantity is highly economical, providing enough paste for approximately 70-80 typical CPU applications, making it perfect for volume builders or extensive maintenance schedules. Explore other PC building components.
Polartherm X8 (40g) Specifications
- Product Name: Polartherm X8 Thermal Paste
- Package Size: 40g
- Item Number / EAN: PT-X8-040 / 4260711990984
- Keyphrase Focus: Polartherm X8 40g
- Operating Temperature: -50°C to +150°C
- Density: 2.6 g/cm³
- Color: Grey
- Base: Silicone Based (with Aluminum & Zinc Oxide)
- Electrical Conductivity: 0 pS/m (Non-conductive)
- Viscosity: Low (Value not specified)
- Thermal Conductivity: High (Value W/mK not specified)
- Application Count (40g): Approx. 70-80 CPU applications
- Included Accessories: 1x PT Spatula, 1x Applicator
- Recommended For: CPUs (Intel Core i3/i5/Ultra 3/5, AMD Ryzen 3/5), GPUs, Notebooks, ICs (TDP ≤ 70W)
Common Questions
Target Audience
Polartherm X8 40g is primarily targeted at system integrators, PC repair technicians, and frequent DIY builders who need a large, economical supply of easy-to-use thermal paste for mainstream systems (CPUs up to 70W TDP like Core i3/i5, Ryzen 3/5). Its ease of application also makes it suitable for educational or workshop environments.
Key Reasons to Choose
Choose Polartherm X8 40g for its outstanding value and extreme ease of application in a bulk quantity. Key reasons include the very low cost per application due to the 40g size, its foolproof low-viscosity formula, solid thermal performance for mainstream components, and its non-conductive safety. It’s the practical choice for volume application on compatible systems.
What are the Pros?
- Exceptional Value (Bulk 40g): Very low cost per application (70-80 uses).
- Extremely Easy Application: Low viscosity is ideal for speed and beginners.
- Good Thermal Performance: Effective for mainstream CPUs/GPUs (up to 70W TDP).
- Large Quantity: Perfect for system integrators or frequent use.
- High Durability: Reliable performance for intended use cases.
- Non-Electrically Conductive: Safe application (0 pS/m).
- Includes Applicator Tools: Spatula and applicator provided.
What are the Cons?
- Not for High-End CPUs: Less ideal for components exceeding 70W TDP compared to higher-viscosity pastes.
- Specific Performance Metrics Missing: Exact Thermal Conductivity (W/mK) and viscosity values are not provided.
- Lower Pump-Out Resistance vs. X10: May require reapplication sooner than X10 on hotter chips over very long periods (though generally fine for target TDPs).
Our Verdict
Overall, the Polartherm X8 40g thermal paste is the go-to economical choice for bulk applications on mainstream systems. Its standout feature is the combination of extreme ease of use, thanks to its low viscosity, and the outstanding value offered by the large 40g quantity. It provides reliable cooling for processors up to 70W TDP, making it perfect for system integrators, repair shops, or frequent builders working within that range. While not intended for extreme high-end systems, the Polartherm X8 40g delivers dependable performance and safety with unparalleled convenience and cost-effectiveness for volume use.


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