Hiya guys just installed my I5 3570K with stock cooler with a new MSI Z77 board with a 670 however I would really like to overclock the 3570K to about 4.4GHZ, I know this isn't possible on a stock cooler, I brought a A50 from Corsair however quickly realised I don't have threaded holes for screws on the back of my case so I'm looking for a good CPU cooler for a good overclock which just slots in place, thanks 
