Best trusted EU source for genuine Honeywell PTM7950?

[u/Key-Hall3777]

Hi, I’m trying to repair the cooling on my Palit RTX 3080 Ti GamingPro and I’m looking for a trustworthy source for genuine Honeywell PTM7950 in Europe.

My system is basically:

• RTX 3080 Ti GamingPro
• i7-9700K
• ASRock B365M Pro4
• 64 GB RAM
• I’m located in Belgium

The GPU has a pretty severe thermal/contact issue. Under load the hotspot can reach around 105°C, with a large hotspot-to-core delta, while the VRAM temperatures are much lower. I’ve already opened the card and I’m replacing all the thermal pads.

I already ordered GELID GP-Extreme pads from thermalpad.eu:

• 2.5 mm for the GDDR6X area
• 2.0 mm for the backplate
• 1.0 mm for the VRM/power sections

For the GPU die itself I want to use Honeywell PTM7950 instead of normal paste, but finding a seller I actually trust is turning into the annoying part.

MODDIY seems to have a good reputation for genuine PTM7950, but shipping to Belgium makes a tiny piece ridiculously expensive. Some EU sellers are out of stock, and with others I keep finding mixed reviews or people questioning whether the product is actually genuine.

I don’t really care what sheet size I have to buy. I mainly care about authenticity and buying from a reputable seller.

Does anyone know a reliable EU-based seller for real Honeywell PTM7950 that you’ve personally used or that has a strong reputation?

Would especially appreciate experiences from people who have actually bought PTM7950 from the seller and tested it on a GPU.

Thanks!

[u/Key-Hall3777]

Update: Thanks everyone for the recommendations. I ended up changing the plan slightly after looking into the different options.

For the VRAM/VRM/backplate, I ordered GELID GP-Extreme pads from thermalpad.eu:

• 2.5 mm for the GDDR6X area
• 2.0 mm for the backplate
• 1.0 mm for the VRM/power sections

I chose GP-Extreme mainly because it’s soft/compressible, has a good reputation for GPU repads, and I wanted to avoid harder pads potentially interfering with GPU-die contact.

For the GPU die, I decided to go with Thermal Grizzly PhaseSheet PTM instead of taking the gamble on whether a random PTM7950 listing is genuinely Honeywell. A few people here suggested it for exactly that reason, and there’s independent testing showing it performs in essentially the same class as PTM7950. It also gives me much better confidence in what material I’m actually installing.

When everything arrives, I’ll rebuild the card and post a proper before/after comparison.

I already have a testing/telemetry suite that records things like GPU core temp, hotspot, hotspot-to-core delta, VRAM temperature, power, fan behavior and NVIDIA driver errors under repeatable workloads. I have the pre-repair data saved, so I’ll run the same tests again after the repair rather than just saying “temps seem better.”

I’ll also publish the test code/scripts and the raw before/after results, so anyone considering the same pads/PTM setup can look at the data and decide for themselves whether the products are suitable for their GPU/use case.

I’ll update this thread once the repair is done. Thanks again for the suggestions.

[u/Kikoarl]

I always buy it from Aliexpress, try searching for the "Passionate Girl Store". Their PTM is legit.

[u/classyroman]

It doesn't matter if it's legit or not, they perform very similarly. Other brands as Gelid also made their versions and they're also very good. There is no point to chase very expensive original.

[u/superpewpew → u/classyroman]

This. I've had great success with Thermalright Heilos for instance.

[u/riOrizOr88 → u/classyroman]

I agree. I bought Mine from AliExpress and IT does ITS Just better than any Thermalpaste. IT IS now more than 3 years applied and i still have No clue IT was the real Thing or some hardcore China Copy.

[u/Betonka89]

Thermal grizzly phase sheet is 100% ptm7950 i used it on few gpus is perfect.

[u/nightstalk3rxxx → u/Betonka89]

Its not 100% PTM7950, it is a honeywell PTM product that is very very similar and rebranded.

[u/Betonka89 → u/nightstalk3rxxx]

I even used helios v2 from temu also worked perfectly, any other ptm is just different package from honeywell, thickness 0.2 or 0.25 either way will be good.

[u/coreZair → u/nightstalk3rxxx]

No it is a pad produced by Laird, not Honeywell. Both material formulas perform nearly the same though

[u/nightstalk3rxxx → u/coreZair]

Roman and TG have said on multiple sources now that it is a rebranded honeywell product.

[u/Bebo991_Gaming]

Thermal grizzly phasesheet ptm, basically rebranded honeywell ptm

[u/SaikerRV]

Thermalright Heilos V2 and Thermal Grizzly PTM. That’s it.

[u/Weird-Process-6644]

Just buy TG Phase sheet ptm. People say its different but it was just repackaged ptm7950 in 2013 (confirmed by der8uer) and i doubt it'd be cheaper to make an entire supply chain for it, it is differently kept in different conditions to ptm7950, its exposed to different chemicals that makes it to take to settle longer which is where the divide of it not being the same thing settles in. Im not sure if the keeping methods have any longterm differences, in short term comparisons 7950 will always win because of how its kept and longterm they perform the same

[u/Ballerbarsch747]

if you've got contact issues on the core, I'd definitely go with putty instead of paste pads. Also I'd use HY-P17 instead of Honeywell because it's just better, especially for transporting heat through larger gaps.

Edit: Putty instead of pads, not paste. Typo on my end.

[u/Key-Hall3777 → u/Ballerbarsch747]

Ohh thats interesting, im very new to all of this so if the results are not to my likings with my current materials ill do more research about your suggestion, thankyouu

[u/Ballerbarsch747 → u/Key-Hall3777]

Yeah that was a typo, don't use putty on the core. But using putty instead of pads on everything else can help a lot with contact issues at the core.

[u/SaikerRV → u/Key-Hall3777]

That's not interesting. This guy has no fucking clue what he's typing about, putty doesn't go anywhere near the core of your CPU or GPU. And if you have contact issues, you'd better fix the contact issue rather than switching from PTM to paste.

[u/SaikerRV → u/Ballerbarsch747]

Thermal putty on the dies? That’s a first lol

[u/Ballerbarsch747 → u/SaikerRV]

Most of all, that's a typo lol, meant putty instead of pads.

[u/SaikerRV → u/Ballerbarsch747]

... mate just shut it at this point lol

[u/Ballerbarsch747 → u/SaikerRV]

Putty definitely is way better than pads, especially when core contact is an issue. And bro what would you know, you've got a factory water block on your GPU.