I just upgraded to an RTX 3080ti from my old 1080ti, which was a gift from my dad who runs a PC repair shop. The card seems to function but I've run into some issues. When I benchmark it in Cyberpunk, it runs smoothly for a couple of minutes and then crashes my system. The fans go full blast and won't stop until I turn my computer off. I've checked the temperature using a PC specs viewer, and it shows around 57 degrees Celsius when this happens. I've also looked into whether the power supply unit (PSU) could be the issue; it's rated at 850 watts, which should be enough. The crashes happen even when the card is idling for a few hours, and I've noticed some artifacting on my second monitor during gaming. Based on what I've described, is this a fixable issue, or should I just give up and consider buying a new GPU? I'm not very knowledgeable about hardware, so I'd appreciate any guidance!
3 Answers
This sounds a lot like the issues I faced when I upgraded from a 1070ti to a 3080ti. Sometimes, an aging PSU will start acting up. But you mentioned your PSU is new... have you checked the cables and connections? Sometimes, loose cables can cause serious problems.
It seems like your GPU might have some issues, but 57 degrees Celsius isn't too hot for a GPU. Since you've mentioned crashing and the fans going nuts, it might be worth checking if there's a problem with the card itself. Maybe your dad could help troubleshoot a bit before making any drastic decisions about getting a new one? You might find a simpler fix than a whole new card.
I've actually been talking to him about it, but he seems quick to want to just buy a new one and split the costs. I’d really like to explore all my options first before spending money again, especially after the holidays.
You might want to consider if the VRAM on the card is dying. If your dad has a repair shop, it could be useful to have him check it out, even if he's not an expert on GPUs. Maybe he can help you get it looked at? It’s always worth a shot before giving up and buying a new card!
He’s not really familiar with GPU repairs; mostly fixes older computers. I really want to figure this out without rushing to replace it.

It’s supposedly new, but I can take a look at the connections. Thanks for the tip!