Got a GigaByte GA-GM889-UD2H system board running a Phenom II 555 CPU using the stock fan. What do you recommend for an aftermarket replacement fan. It is in a InShin BA-630 mid tower case with a 500W CoolerMaster power supply. Looks like an aftermarket fan may block my RAM slots. Have heard about the CoolerMaster Hyper 212 and Hyper TX3. Any others? Any recommendations?