Need some more info, but drivers are usually the cause of my numerous video innacuracies. I ended up settling for the leadtek winfast drivers included with the card, almost 50 3dmark scores higher (3829 205/210 mhz) than the Nvidia reference I had been using (only a 3dmark of 3775). I'm using a gefore2 MX, so there are slight differences, but your card should be smoking mine on 3d marks. Keep trying different driver combos and directx 7 and 8 with them.. Sometimes fresh install of windows can solve all of this rather painfully.