dust off your GPU. most GPUs are built to run far below 95°C, but some ("blower-style") do get hot. now add dust to (possibly) an already weak cooling system and you've got a fried GPU. overheating because of dust build-up is a common cause for component death, so beware.

if you feel adventurous, then look into repasting your GPU, it might be worth it every few years. if you do that though, mind the thermal pads for memory. get replacements that are the right height within 0.5mm!