Honeywell PTM7950 thermal pad discussion
The gist
An ASUS TUF RTX 4090 owner reported a 31.8°C hotspot drop after fitting Honeywell PTM7950.
The pad is widely counterfeited, so buyers are warned to find a reliable source.
How it unfolded
- Nov 18, 2025Igor'sLAB published a test of Thermal Grizzly's Phase Sheet PTM, a phase-change pad with ~6.5 W/m-K conductivity and a 40-55°C melting range, framed as a Honeywell alternative.
- Nov 4, 2026An ASUS TUF Gaming GeForce RTX 4090 owner published servicing results after installing Honeywell PTM7950 on the 25x25 mm GPU and swapping factory pads for Thermal Grizzly TG Putty Pro; in 3DMark Port Royal the hotspot fell from 103.1° to 71.3°C.
- Nov 4, 2026In the same report, Cyberpunk 2077 at 0.900 V and 2524 MHz saw the hotspot drop from 84.1° to 59.5°C at a base frame rate of 94 FPS.
Key terms
- phase-change thermal pad
- A pad made of material that absorbs or releases heat as it changes between solid and liquid states.
Source: Wikipedia