I modded my cards saphire 3870 modded firepro 9170 on xp32 (8.44)FULLY WORKING and v7700 xp64 (8.4XX.1)FULLY WORKING 1 or 2 hours later system immidiately restarting.always doing this XP32 AND XP64 and i just bought xfx 4870 1gb moded v8700 (only work %90 fine in x32 DRIVER 8.603 MODDED DRIVER DOWNLOADED INTERNET) this restarting too (LIKE 3870) BOTH CARD RESTARTING IN 2 HOUR (LEAVE COMPUTER IDLE AND INTERNET DOWNLOAD ----OR---- FULL 3D BENCH ALWAYS RESTARTING IN 2 HOUR) I LOWER GPU MHZ AND RAM MHZ AND DONE IT AGAIN is there any fully stable card...for long usage 3870 fully works 4870 neraly fully some scpec test not working bur solidworks work fine. SPEASE HELP ME I REALLY NEED A STABLE CARD.