Ive been using corsair hydro cooling solutions for a while now, quiet and run very nicely. Depending on how heavy you plan to clock your cpu, they got few options. I think i used hydro 70 which is mid range and does well for 4.5-4.7 oc at about 75 deg c. under load. In general if you plan to oc your system get hardware that will handle this extra stress f.e. oc capable ram, mb, cpu etc. Buying cheapest hardware will surely result in failure and probably wont last as long.