You can check out some videos about the AMD A8-6600K, which I have just bought yesterday. The reviews are pretty solid but they are mostly in foreign language. I am wondering about Day-Z, but it plays games like Crysis 3 around 30 FPS. You can find this review herehttp://www.youtube.com/watch?v=UFdsGOGBjNo
I am not sure how fast your RAM is, but the faster the better.