I have DirectX8 and Win 98, sorry. But, my system got better 3Dmark 2000 scores with the 21.81 drivers compared with the 12.90 drivers. Both driver sets seemed very stable when overclocked. My system uses a P-III 700 @ 1050, PC-150 RAM, and a Hercules MX card. I've had the newest 21.81 drivers on my computer for a week now, no problems.