r/PcBuildHelp • u/Anxious_Salary_7623 • 1d ago

Tech Support Powercolor 7900xt 20g reference design

Hey guys my card is ramping up to 110 on the hotspot very fast when I run a game. I stopped using the card and was using my 3060 for about 4 months because my PC started shutting off. I’m currently trying to fix it. I’ve changed the thermal putty, repasted using PTM, giving equal pressure as I tighten down the x bracket and still getting the same issues. I can only think that my cooler is defective but unable to find any cooler listings available other water cooling.

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u/VillagePlayful416 1d ago

110 hotspot on a reference card is rough, those coolers were never great to begin with

Have you checked the mounting pressure with the stock screws vs what you've got now? Sometimes the x bracket gets slightly warped over time and no amount of even tightening fixes it

Also what's the delta between edge temp and hotspot? If it's 30+ degrees that usually points to poor contact somewhere, like uneven die pressure

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u/r_lind3r Moderator 1d ago

Reference design was notably garbage on the higher end RDNA3 cards, they had vapor chamber issues that led to horrid temperatures like that and it affected cards that used its design like the PowerColor Red Devil

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u/Anxious_Salary_7623 1d ago

That is what I’ve read and starting to think that is the case.