I put my I5 750 to 3.6Ghz, on FC2, i saw a little difference. I don't know which motherboard do you have, but the overclocking of the 750, is very very easy!
(No risks for hardware if you don't raise too much CPU Voltage)
For cooling, like the other. Take a Noctua. NH-D14 or NH-U12P.
;)
(Sorry for my french-english :music_whistling:)