It's perfectly compatible, the cpu and the motherboard(it supports that cpu out of the box).
Just a note, that cpu doesn't have integrated graphics, but i guess you know that and since it's a gaming pc, you'll have a discrete graphics card, so you're fine.
Oh ok thanks, I was worried there for a second. Would you happen to know what GPU would fit nicely with this? I was thinking the Radeon HD 7850 or the GTX 650 ti but I would be okay with going up to $225 if there's a significant increase in performance (I just saw the AC:Black Flag trailer lol).
I'm sorry for asking so many questions