I know this card is an older one, but i just built an extra machine and drug it out of its box. I was just wandering what a good overclock would be....its an MSI 5600xt and its orig clock is 235 and its memory is 400 and i got them to overclock at 355 core and 642 mem. It seemed pretty good, but had no clue. I ran 3dmark 03 before oc and it got 1764 and after got 2781. So it made a remarkable difference. The comp is an AMD AthlonXP 2600 barton core, 512 mb of pc 2700 ram and a biostar m7-ncd and a maxtor 80 gig 7200 rpm with a 2 mb cache.