HoloDust on 05 November 2012
I think A10-5700 + 7770 might be reasonable to expect. Though they cannot be crossfired (at least according to official specs), if they manage to use them both at the same time, this would be system's combined GPU power (based on 760Mhz core clock of 7660D in 5700 and 1Ghz of 7770) :
Pixel: 6.1 + 16 = 22.1 GP/s
Texel: 18.2 + 40 = 58.2 GT/s
GFLOPS: 583.7 + 1280 = 1863.7
Just 7850:
Pixel: 27.5 GP/s
Texel: 55 GT/s
GFLOPS: 1761.3
Combined TDP would be 65+80=145W (80W is TDP for desktop 7770 - 45W is TDP of the same chip in mobile version (7870m for example) with core clock of 800Mhz). So, all considering not bad I guess - seems to fit into "not too expensive, but decent performance" idea.
