Works fine on 2D mode with video, but even a second on 3D clocks i'm getting stripes. Is there any solution to this? Have tried to use RBE to set all clocks to 550mhz core and 500mhz mem, no luck. Have replaced thermal grease no change. would really appreciate any suggestions. Have reinstalled windows 7 64bit, no luck. Can't RMA bought the card as a replacement for the dead 8600m gt on ACER Aspire 5920.