start with system setup.
i7-930 @ 3.3Ghz.
Corsair dominator gt 1600 3x2gigs
windows 7 64 bit
Ok, so both cards work. tried them in single operation. removed drivers in device manager and installed new drivers. Newest ATI drivers don't work so I'm back to 10.8, this years earlier drivers. New drivers don't work for single card or dual card operation.
So with both cards installed, and the drivers freshly installed both cards appear in device manager, and it says they are working properlyl. In CCC ati overdrive however it shows both cards, but my second card reads 000 mhz core clock and memory clock. my primary card reads 400 core clock and 1125 memory clock. If i use amd gpu tool to set my clocks nothing in ccc changes.
If i play games with this configuration my fps falls soooo low. Like 30-40 fps for left 4 dead 2. So i'm sure the readings in ccc are accurate.
need more info? have any suggestions please send them my way. the threads i've found dealing with similar issues are way way way outdated, like 2+ years ago.