Hy Guys!

I have got a big problem with my A8 5600k and HD 6670 1 GB DDR3 (gigabyte) vga card.

I enabled the dual graphics mode, in  "AMD vision engine control center" but doesn't work.
I have tried with a lot of new games, with and without APU, but i've gots more fps without APU, why? The OP system: Win7 x64. The latest vga driver: 13.2 beta. ( I first try with 13.1 driver, but cannot work).

For Example:

Battlefield 3: (Dual Graphics enabled)

Resolution: 1024x768 75 hz
High settings
15-18 fps, and lag! 

Without APU: (1024x768 75 Hz) high settings, 31-35 fps, and smoothly!

Next:

F1 2012: (dual graphics enabled)

Resolution (1024x768) 
Everything on Ultra.
MSAA 2x.
FPS: 15-22 (and lag!)

Without APU (alone HD 6670) 25-30 fps and smoothly!

Assassins Creed 3. (Dual Graphics enabled)
Resolution (1024x768 75 hz) 
max settings out,  8-10 fps it can't playable.

Without APU: (1024x768 75hz), 25-35 FPS!

I hope you can help me and solve my problem.
I look forward to your reply.

Toxic 

Throw away the 6670 and get a better card. Dual graphics with apu and discrete cards sucks monkey balls