I am wondering if I could get a decent fps gain in games if I overclock my cpu to 4GHz+? I got a phenom 2 x4 965 Black Edition at stock of 3.4 and a nvidia 660 ti Power edition from MSI. I am getting usually 40+ fps on pretty much all games with settings maxed out. but a couple games like Hitman Absolution and Saints row the third go down to 30. Is it possible to get more then 30 say 40+ if I increase my CPUs max frequency?
Also, what would be a good semi cheap cooler that would get me to that speed but keep it under 70 at full load? I like the noctua nh-d14 or thermalright silver arrow seem like overkill and are not that cheap.