MacMan,
Thank you so much for the excellent work.
I tested 2 XFX ATI 6850 cards
XFX 6850 ZNFC works OOB. 2 DVI ports work, HDMI also works
http://www.newegg.com/Product/Product.a ... 6814150505
But for XFX 6850 ZCFC, Nothing works, neither of 2 DVI, nor 2 mini DisplayPorts...