every game crashes with the same error... and it's not my gpu?!

been there man do a clean driver install: download the current driver from your GPU vendor, boot to Safe Mode, run DDU, then install... also remove overlay/recording tools temporarily, they hook into the same rendering path. hope that helps :)

Ah, I went through smth similar. @jpetrov how are teh PCIe power connectors cabled: separate cables or one cable with a pigtail? ??

its a factory-OC model and Ive never touched the clocks. event Viewer shows a display driver reset at each crash time.

nice