So am planning on getting a new laptop for gaming and I can't decide on a cpu : what's better an AMD apu or an i5 processer? Also heard of dx12 coming out so will the Intel HD graphics benefit from it?
DX 12 might help, but for games, a current gen dedicated GPU is almost always better. Maybe some bottom of the barrel dedicated cards that are not much better, if at all. Anything you would remotely consider for gaming, will be faster.