I'm planning to build a gaming pc and I'm going to play loads of bf4. I've heard bf4 is optimized for amd but that in bf3 nvidia outperformed amd. So which is the best choice? Does the optimization make a big difference or... Yeah.
BF4 is AMD optimized. It makes enough difference to make it worthwhile to pick one or the other if you play a particular game alot.
BF3 is pretty old so both companies have had time to optimize their drivers