I'm looking to overcloc my i7-870 cpu so I would like to invest in a decent cooler. I was hoping to get a little advice as to what direction to go in. I'd like to keep the budget to around $50 if I can. The aesthetics don't really matter to me, but I'd prefer one that isn't too loud. I have a HAF 922 case and a Asus P7P55D Pro Mobo. The CM Hyper 212 looks like it might not be a bad choice. Thanks in advance!