i have a GTX280OCX and having issues with it just the last couple of days.
Basically its locking and showing artifacts but full screen, temps are fine under load testing but eventually it will crash during gameplay.
One thing i have noticed when i monitor with Rivatuner is the Memory clock and setting seem to fluctuate, currently when im writing this im showing
core clock = 300.86
core clock shader domain = 601.71
memory clock = 100
run something like Furmark and sometimes it crashes, i notice the MHz shoot up.
Wondering if the memory is giving out on me perhaps.
Mainly noticed the crashing when playing ARMA2 oddly can happen after 5mins or after 3 hours continous play.
Done all the usual
Reinstall / update game
Driver sweeper in safe mode and reinstall driver
remove reinsert card
roll back drivers
checked all connections
kicked the cat
complained to our lass ( fell on deaf ears
Arrgh ... assistance please gents!!
Spec in Sig
Biostar Tpower I55, I5 750 @ 4.2Ghz, 4GB Kingston DDR3, Custom water loop - Thermochill PA120.3, Heatkiller 3.0 LC, Laing DDC Ultra, XSPC res top, XSPC white hose, Asus 5870, Antec Quattro 1000, Lian Li PC-X2000, Win7 ultimate.