The Thermal Channel

Independent Thermal Testing



For testing or inquiries, please visit our YouTube channel.

We provide detailed reviews and testing results for various thermal interfaces. Contact info can be found in our YouTube channel details.

Windows 11 – Running ROCm ZLUDA PyTorch Stable Diffusion 2024 Instructions.

Windows 11 – Running Intel ARC On Pytorch 2024 Instructions.



Performance Tier Chart - 2024 Platform - Thermal Interface Head to Head

The rankings are purely my opinion. These tiers take into account many factors like performance, price per gram, ease of application, availability, and trust in the brand.

S+ Tier

S Tier

A Tier

B Tier

C Tier

D Tier

F Tier



2024 Thermal Testing Setup

GPU Thermal Testing

Lenovo P520 - W-2135 - 64GB DDR4 - ASUS ROG STRIX RX 5700 XT GAMING OC @ 220w 260w 300w

2025 Thermal Testing Setup

CPU and GPU Thermal Testing

Open Air Laydown Test Bench

14700K Delid - Die Side Liquid Metal - Thermal Grizzly Heatspreader V1

Thermalright Phantom Evo Cooler

64GB DDR5 6800Mhz RAM

MSI Z790 Tomahawk Max Wifi Motherboard

SAMA Back Diamond 1000w Gold PSU

Sapphire NITRO+ RX Vega 64 [Vertical Mount]



2025 Long Term Thermal Paste Testing

Test Year Test Device Manufacturer Thermal Interface Testing Start Date Wattage Baseline GPU Over Ambient c Heat Cycles Attempted Heat Cycles Completed Degradation Final GPU Over Ambient c
2025 Test Platform Sapphire NITRO+ RX Vega 64 Thermal Grizzly Thermal Grizzly Kryonaut 12/20/2024 360 43.9 10000 TBD TBD TBD


2024 Thermal Interface Benchmarks

Test Year Test Device Manufacturer Thermal Interface Wattage Die Area mm/sq Die Load w mm/sq GPU Over Ambient c Hotspot Over Ambient c Sum Over Ambient c Test Link