Well ever game and ever time after a while if GPU-Z is running games will just turn off after a random time any time after 40minutes. I thought some thing else was wrong until i stopped using GPU-z and now the issue is gone. Issue is i need to keep eye on my temps for my 4890 with it getting so hot. Games it does it on are TQIT GTA4 Not played others long enough to know they do it too. First time it did it was with GTA 4 which i thought it was the new patch but it don't happen if GPU-z is not running.