everything ive seen on reviews and such say once you add a graphics card its good to go, id personally still benchmark without a card, with the duel graphics and lastly turn the integrated off if possible just cause im a curious monkey... gauge the system from that add on then determine if you need to overclock... ive been trying with my a8-3870k with some luck for a total new overclocker,, some good tips from fellow toms members but still getting some bottlenecking from my guess the northbridge but no idea really couldnt get much more help after a few messages...
another note, my cousin built himself a general use system just before i got the funds to order my stuff, he spent about 300 more then me on amd based system and that was 250ish towards a 550i gpu since he went non apu "didnt know abut em" and has a decent gaming machine now,, we compared benchmarks and i had him on everything except the graphics... novabench for example i score around 760 he got around 940,, only score that was higher then mine was the graphics, plus from what i understand a gpu takes some stress off the processor so thats also a plus..
sorry to ramble, hope this helps