http://pcpartpicker.com/p/hWm9jX This is what i have so far I have 300$ leftover for cpu/gpu the games i play consist of dayz, cs go(trying to get 144 hz monitor), LoL, and arma 3 If anyone could help me out with picking the right ones that would be great
You'll need a motherboard in there too. If you're only playing games just grab yourself a i5 processor unless you're going to be doing editing and what not. You'll be wanting to spend most of the money towards the GPU, so I'd go with something pretty beefy like a 970/980. 970 would be more of an option, unless you want to go the AMD route which is probably a bit cheaper.
Moved to technology On topic - wait a couple months if you can. The 1k series gpu's have already been announced and will be releasing soon. Waiting will save you some money on a 970/980, providing you go that route.
^^ The new "mid-tier" line of cards coming out absolutely destroy the benchmarks of current high end cards. If you're desperate for a computer NOW, buy a used 780 or something along those lines, then just sell it off or keep it as a back up when the new cards roll out. As for 144hZ, just find the cheapest one. AFAIK all of the 24 inch 144 hZ monitors from Acer, Asus and BenQ all use identical panels. The only difference between all of them is the internal software and the "look" of the monitor.