How to Apply Thermal Paste: Definitive Guide

The rice grain application method consistently outperforms manual spreading in real-world tests. A rice-sized drop applied to the centre of the CPU IHS, with mounting pressure allowed to spread it naturally, achieves 67°C versus 72°C for manual application. Always clean surfaces thoroughly with 90%+ isopropyl alcohol before reapplying.

Thermal Paste Types

• Ceramic (non-conductive): Safest to apply, good performance — e.g., Noctua NT-H1, Arctic MX-6
• Metal-based (conductive): Best performance but dangerous if it contacts circuitry — e.g., Thermal Grizzly Conductonaut
• Carbon-based: Good balance of safety and performance — e.g., Kryonaut, MX-4

Step-by-Step Application

1. Remove old paste using a lint-free cloth and isopropyl alcohol (90%+)

2. Let surfaces dry completely — 60 seconds is sufficient

3. Apply a small rice-grain-sized dot to the direct centre of the CPU IHS

4. Mount the cooler immediately — let the pressure spread the paste

5. Tighten the cooler screws in a cross pattern to ensure even pressure

Avoid using too much paste. Excess will squeeze out the sides and potentially contact capacitors around the socket, which can cause issues with conductive compounds.