title says it all i probably won't overclock.And yes,i know dayz in unoptimized garbage,i still want to get this game and give it a try,but my pc can't even run tf2,soo im planning to upgrade to an r9 270 and to an fx 6300/x4 860k
FX 6300 will provide better performance. It is a 6 core and the other is a 4 core. DayZ is heavily CPU intensive, so you will benefit from more cores given the .2 GHz base clock difference. The 6300 also has a higher default boost clock, so all the more reason to get it.