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Honeywell ptm7950 experience for gpu :)

Makaveli said:
I may have spoken too soon i'm seeing lower hotspot temps in games and benchmarks Its only AIDA gpu stress test has has it going much higher.
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Are 96ºC on the memory, normal for that card ?
 
droopyRO said:
Are 96ºC on the memory, normal for that card ?
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Yes but i'm going to address that.

Should arrive tomorrow!

1724541140812.png
 
My ptm7950 sheet had amazing results on 4090 for about 6 months - the hot spot temps started creeping back up to 100C and there was a bald spot when I took it apart.

it does ultimately pump out - replaced with kryosheet and that worked extremely well - has been on there with no issues for about 6 months and no change in temps.
 
phanbuey said:
My ptm7950 sheet had amazing results on 4090 for about 6 months - the hot spot temps started creeping back up to 100C and there was a bald spot when I took it apart.

it does ultimately pump out - replaced with kryosheet and that worked extremely well - has been on there with no issues for about 6 months and no change in temps.
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I wonder how thick they make them because I may try them on my Dell XPS Gen 1 laptop for the chipset and gpu
 
eidairaman1 said:
I wonder how thick they make them because I may try them on my Dell XPS Gen 1 laptop for the chipset and gpu
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theyre pretty thick and actually easy to put on - so I think as long as your cooler / chip contact doesnt have any defects it's probably fine. It does take a few runs to settle in though the initial performance is pretty terrible.

Still overall I would say if pump out is your worry just use a kryosheet and never have to think about it again.

PTM7950 AFAIK is what nvidia uses as OEM on their FE cards which is why I swapped it with the same initially.
 
Just a little update on PTM 7950 long term results with my 4070 Ti TUF card temps were 10-11C delta between core and hotspot for the first 4-5 months, 7 months later now it's 13-15C delta, guess this stuff degrades after serveral months.
 
I am using a Thermalright Heilos pad, its ok still, been a few months. MSFS kicks the hotspot up to 80, no matter what I do. Its still better than what was there before.

Also, that is +150 on the core for a bit over 3GHz, +1500 on the mems.
 
Update: temps are the same or maybe slight better after a year. Ptm7950 on gpu, direct die cpu or notebook really worth it :)

StarlightGalaxi said:
Just a little update on PTM 7950 long term results with my 4070 Ti TUF card temps were 10-11C delta between core and hotspot for the first 4-5 months, 7 months later now it's 13-15C delta, guess this stuff degrades after serveral months.
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What are the temp under load? I've seen report of degradation/pump out on notebooks with 80C+ over time. Some ptm7950 are not genuine. It may perform quite good, but not like the original.
 
Cowboystrekk said:
Update: temps are the same or maybe slight better after a year. Ptm7950 on gpu, direct die cpu or notebook really worth it :)


What are the temp under load? I've seen report of degradation/pump out on notebooks with 80C+ over time. Some ptm7950 are not genuine. It may perform quite good, but not like the original.
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PTM will pump out over time, way less than paste due to the higher viscosity, but it still liquifies under load so uneven heatsink pressure + high temps will still pump it out. If you have a more or less even heatsink it will last much longer than paste.

If you want guaranteed no pump out you want something like a thermal grizzly kryosheet.

I've had mine on the 4090 for over a year now - temps stay the same.
 
Does anyone know where I can get legit PTM 7950 in the UK? I can find it online here and there, including couple of vendors on Amazon UK, but I'm concerned maybe not legit
 
The only guranteed legit vendor I have found is moddiy, but they ship from China.
 
I bought a used Gainward 2060 super ghost that had just been repasted with mx6. Tested superposition with 1080p extreme 8k optimized.
1000009397.jpg



I repasted with ptm7950 and it worked fine as usual.
PXL_20250523_135959675.jpg



Core 2C lower, hotspot 4.6C lower, fanspeed 110rpm lower.

Both were tested at 1455@700mv uv with 15GHz vram

After many runs I increased to a more aggressive UV:
PXL_20250523_143520745.jpg

Using 5W more gave same temps and same fan rpm so ptm7950 began working it's wonders of gradually improving performsnce slightly ;)
 
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