My rig:
Sempron 140
ASRock  970 Extreme4

GPU0: Sapphire HD5830 Xtreme @900/600, 285 MH/s
GPU1: Sapphire HD5830 Xtreme @900/300, 285 MH/s
GPU2: HIS HD5670 IceQ @880/500, 100 MH/s

Total: 670 MH/s

http://img163.imageshack.us/img163/7619/dsc0190ncv.jpg

http://img85.imageshack.us/img85/9004/granja2d.jpg