this post was submitted on 15 May 2025
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Expert criticizes Gigabyte's alleged use of 'viscous paste with questionable long-term performance' instead of tried and tested GPU cooling solution (www.pcgamer.com)
submitted 2 weeks ago by [email protected] to c/[email protected]
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[–] [email protected] 6 points 2 weeks ago* (last edited 2 weeks ago) (1 children)

I've had very good results with PTM7950 phase change material on my CPU, which has not been delidded. I expect it would work even better on a GPU, which typically doesn't have a lid.

(Note that PTM7950 is somewhat difficult to apply, since it comes in a pad-like form that is both sticky and brittle. If you decide to try it, I recommend refrigerating it first, and being careful and patient when applying. I feel it was worth the effort.)

[–] [email protected] 1 points 2 weeks ago (1 children)

Really interested in trying PTM on my graphics card, but it's still too expensive. You need several sheets to cool all the components and Thermal Grizzly is the only brand I can get a hold of.

It's cool (hehe) that it's even available at regular computer retailers though.

[–] [email protected] 2 points 2 weeks ago (1 children)

How about using one sheet for the GPU itself, and less expensive thermal pads for the memory chips and/or voltage regulators? I think AIB designers often use this approach.

[–] [email protected] 0 points 2 weeks ago (1 children)

Yeah, I realize now that I'd have to do that anyway, as PTM pads are not available in those thicknesses (if the material even works well at those thicknesses).

What I should do is get some thermal putty to replace the pads, so I don't have to bother with getting and cutting the right size of pads.

I also found a PTM pad from Cooler Master on the market called Cryonamics. But it seems like a very new product. I can find no one even as much as mentioning it online. It's half the price of the Thermal Grizzly so I'm tempted to try it.

[–] [email protected] 1 points 2 weeks ago* (last edited 2 weeks ago)

I read somewhere that Thermalright's Helios line includes pads equivalent to PTM7950. (I don't know if it's Helios V1, V2, or both.) Maybe they're worth a look?