I recently got my hands on two brand new Sapphire HD4550 cards... real deal from a friend... Put them both in and all, and it's on a P5K board.
Here's the thing: CCC says it's there, but disabled... there's no way to enable crossfire in any way! I updated the drivers, even the BIOS and nothing at all! I'm starting to despair... can anyone help me?
when i first got my HD 4870X2 i had windows XP and in CCC it reported that i have an disabled display adapter so i switched to VISTA 64 and it was fine,can u test your system with VISTA ?
it's the crossfire connector, the CCC still preforms a software crossfire, but it also informs you that no bridge is connected.
had the same "problem" with my cards... went through hell to get a crossfire interconnect, all in all to find out there's no real gap between software crossfiring and hardware+software crossfiring.