You need a 8xxx card for DX10. None of the 7xxx cards support DX10. Few cards support DX10.1. You can only run in DX9x mode. -- SCSIraidGURU Michael A. McKenney 'www.SCSIraidGURU.com' (http://www.SCSIraidGURU.com) Supermicro X7DWA-N server board pair of Intel E5430 quad core 2.66 GHz Xeons 16GB DDR667 SAS RAID eVGA 8800 GTS 640 MB video card