I recently upgraded my APU from A10-6700 to A8-7600.
The reason is that the Dual Graphics configuration (8670D + R7 250) did not work (though CCC said it would).
Now, I am experiencing the exact problem as before. Benchmark results didn't change at all (Only about 200 in Unigine Heaven 4.0, Extreme Preset / about 1000 points in FireStrike), no matter whether Dual Graphics is enabled or not.
In UEFI, I set Primary Graphics to PEG instead of IGD and Dual Graphics to ON, Allocated RAM to 2GB. iGPU Clock is set to 1016Mhz in UEFI.
You find my system specs below.
I am using the latest beta driver (Aug-14).
MB: MSI A88XI AC // APU: A8-7600 // GPU: XFX R7 250 2 GB DDR3 // RAM: Mushkin 8 GB DDR3-2133 Single Channel // OS: Windows 7 64