I have both, and both of them work fine. My GTX570 is an ASUS brand, and the other is a M560GTX-Ti Twin Frozr-II.
The screen that the GTX570 is on is a 27" 1920 X 1080 ASUS, but the M560GTX-Ti is on a 23" screen with a 1680 X 1050 resolution so it's not being taxed very much.