i had this card for about 4 months and now i cant even overclock it to like 700 or under i tried the voltage tweaking already, everygame i play i get artifacts and the computer crashes i use oc scanner and it shows that im stable for 10 mins and up but when i play games like bbc2 or even 3dmark it crashes. can any one recomend me a program to check if gpu is stable i tried kombuster it didnt go so well either i dont see any artifacts coming up on the screen but when i play games the aritifacts come and crash maybe my gpu is fried what do you guys think?