How good are the graphics on the A10-7850k

for gaming, you'd be looking at 720p and probably medium 'maybe-maybe' high. 1080p, 'maybe-'maybe' low settings. And those maybes would be a stretch and only certain games. Im pretty sure you can crossfire with a 7750-7770 if im not mistaken. Would also recommend you use 2333 mhz ddr3 ram, 8-16gb. Gaming usually only needs 4, system usually takes 2-4 depending which other programs your using, but that would leave anything left over for graphics part of your cpu to use. If you did that, you'd more than likely high solid medium to high on 720p, and at 1080p should be able to medium to high.
 
8gb is the best ratio. Any more and you might as well get a discrete card. You can xfire with up to a 7750 i believe. Also it can play most games at 720p and some games at 1080p (like skyrim with no mods) but at about 30fps. For a frame of reference, it can max League of Legends at 1080p and 60fps if thats the kind of game you are going for. It can actually do more than that because a 6800k can max LoL