I have rig of 7 3090s that I bought from crypto bros, they are lasting quite alright and have been chugging along fine for the last 2 years. GPUs are electronic devices not mechanical devices, they rarely blow up.
you get a motherboard designed for the purpose (many pcie slots) and a case (usually open frame) that holds that many cards. riser cables are used so every card doesnt plug directly into the motherboard
I've noticed on ebay there are a lot of 3090s for sale that seem to have rusted or corroded heatsinks. I actually can't recall seeing this with used GPUs before but maybe I just haven't paying attention. Does this have to do with running them flat out in a basement or something?
