Tried these with crossfire 7970s and had to system restore back to 12.3. Even with Caps using the 12.4s for some reason one card clocks down to idle 500/150 speeds and seems to stay there during BF3, even though gpu1 is at 1000/1425 and both cards seem to be using some gpu. Rolling back to 12.3 and they both work just fine at 1000/1425 utilised at 90% +. Anyone else seen this and any ideas on a fix? Tried the usual remove drivers, clean install, driver sweeper in safe mode etc.