Coolmaster vortex plus
One of the best cheap / quiet coolers on the market!!
It has direct touch heat pipes ( gives it great heat transfer )
Large quiet fan, ( large fan don't need to spin as fast )
Big fins, lots of surface area.
Great designe, as fan blows down thru main fins, it also blows down on main block in contact with cpu.
If u install it with the bend in heat pipes facing down, it also blows air across memory and voltage regulators.
Universal mounting config, fits most current intel / amd CPUs
No backing plate needed
Comes with ok heat transfer paste.
I'm running it on my intel i5-3570k, (a naturally hot running cpu ) overclocked to 4.5ghz, it keeps it at about 35c at idle, and 68c fully loaded.
I've set the fan to run from 10% to 80% speed ( on difference in cooling from 80% to 100% other than fan noise )
Also, do not put dab of heat paste on cpu !!!!
Put heat paste on the coolers block, make sure you get it into all the little crevices, then scrape it as thin as possible with the edge of a card or something straight.