In the manual for my ASUS Croshair mobo there is a lot of talking about SLI...and there even is a SLI cable/bridge cable included...... BUT nothing about CrossFire ?? I also have a Sapphire HD2600XT 512 MB card...and I am wondering if its possible to do CrossFire with a identical card - at all ?? Does the Nvidia nFore 590 SLI chipset not support CrossFire ???