*
I have tested with 3 * screens connected to the first graphics card HD5770
1 - DVI --> DVI screen
2 - DVI --> adapter DVI to HDMI ( special ATI adapter ) --> HDMI ( i have sound ok with my TV LCD )
3 - cable adapter miniDisplayPort to DisplayPort --> Dp to DVI ( active adapter by Sapphire ) --> DVI
All run fine also With 2 * HD5770 in Crossfire with WINDOWS 7
Only a problem i have no Option valid in Theater Mode
Pierre