I recently got an asus gtx 660 ti card to replace my old zotac 560 ti(reference design) graphic card. so i plugged it in on my intel DZ77SL-50K motherboard, installed a new os win 7 x 64 ultimate, installed the 306.23 driver from the asus website. Now my display goes blank and comes back after 2 to 5 seconds when i browse the internet or play hd videos, its fine when i play games. happens in photoshop, browsers and media players. Worked perfectly fine with the gtx 560 ti reference design.tried installing the latest bios for both the motherboard and the graphic card. sent my card and motherboard over for RMA got it back still facing the same problems. please do not but non reference design nvidia graphic cards.