diagnose gpu

Full description: I've had the problem, that after the screen goes dark (power saving after 30 minutes) there was no image coming from the gpu when using the mouse for... quite some time now on two different monitors (TV, curved Samsung) but a restart always solved the problem (replugging the...

So I just got my RTX 3080 installed and I hopped on some of my favorite games to test out this beast of a GPU like: Borderlands 3, Forza Horizon 4, NFS Heat, Assassin's Creed Odyssey, and even Rainbow Six Siege. All to find out on ultra settings @ 1080p I was getting micro stuttering and FPS...

My motherboard has diagnosed a gpu output error, and I am pretty clueless as to how to fix it. I cannot get a display or post with or without the graphics card, and I had my PCIe cables connected and the gpu correctly clicked into the top PCIe slot when the gpu was in. I have also tried hdmi 1...

Ok, so I would, like to start learning about how gpu's work. I know basic stuff about cards, like how cuda cores / stream processors work ( basically what you can learn from techquickey and all Linus channels), and I know what smds, and capacitors are. I am familiar with electronics. But I'd...