I'd do some research about AMD Before letting other's sway your opinion about it, AMD Is great for Gaming, the only reason you'd need to switch to intel, is if you want the latest and greatest FPS in games, and I mean the best of the best.
AMD Offers Awesome Gaming for Affordability, I'd ignore what "Lakes" Mentioned because your APU Will game just fine, do yourself a favor though... Check out
Can I Run It , and see what games your computer can run though..
Also if you have a set budget, I could make you an awesome build!
Side Note - What resolution do you plan to run these games? At 1080P Medium to High settings with an APU and 4GB of ram, that's strictly speaking a dead no sorry. Now 1080P Medium to High on 2133Mhz or greater speed Ram(8GB or more, more is better.) And your starting to look great! But i'd check out the A10 7870k if you want 1080P Gaming with Decent FPS and Decent Affordability.
Sincerely,
Zac's Custom