I have an ASUS K75de, my model in particular has an amd-a10 Llano apu with a build in 7660g, but it also had a dedicated 1gb video card which is the 7670m, so Im running them in hybrid crossfire. The pic attached is my cpu-z and gpu-z screens.
Overall they arent bad for light gaming, I can play battlefield 3 on low at 1600x900 smoothly, though medium looks better, Im managing about 20 fps on medium, it'll handle any source engine game with ease, as well as diablo 3, dishonored, bioshock 1, just keep in mind these arent top of the line cpu-gpu combos - you get what you pay for. Its a 17" laptop and a bonus with this one in particular I found is it has 2 hdd bays, so I have a 256gb ssd as my primary and a 750gb for storage, and it was $599 on sale, here in Canada
So when it comes down to it, you just gotta realize that for $600 you're not going to get knock out performance, but its far superior to an i5 with "intel HD graphics", but the i5 is a better cpu, so it depends what you want.
I hope this helps you
any questions just ask