A £99 560Ti 448 like the ones on sale in my link above should be awesome for that setup. Much better than 2 x 6670's too!
Similar to the above question. I'm pleased with my A10 so far.
Runs Borderlands 2, Xcom, Deus EX fine. It does started crashing on Max Payne3 though. I assume it's struggling without a dedicated GPU.
So what GPU goes with this?
ASUS DRW-24B5ST bare
AMD A10 5800K Black Edition with integrated AMD Radeon HD 7660D
I doubt I can afford it this month or next but I can lust over it and price watch it at least.
edit: the internets suggest a Radeon HD 6670 in crossfire.