JozefK :
oczdude8 :
it should be fine, and I'd avoid overclocking with a stock cooler.
Will the cpu not bottleneck my gpu? Is 2.8ghz enough? And would OCing to 3.6 be too risky?
Yes, your cpu will be a bottleneck, however, you should be able to get playable fps (40-60fps).
if you read this: http://www.pcgameshardware.de/Battlefield-3-PC-221396/Specials/Battlefield-3-Multiplayer-Tipps-CPU-Benchmark-1039293/
your cpu can hold an avg 61fps running bf3 with a gtx 680. you would get similar results on bf4 with a 770.
regarding overclocking, I would not overclock your cpu, unless you are getting cool temps now, which I doubt. you could try it, and test it out; if you get high temps, immediately go back to stock.