Like Tattare said, you can move the fan up if RAM clearance is an issue. I bought my RAM at the same time, so I made sure to get some that didn't have the crazy high heatsinks. This thing is a beast though. I got my i7 920 at 4.2GHz and can't get it to go past 68C with Prime95 running. However, if I had to buy a heatsink now, I'd probably get the Venomous X and just do a push/pull config with that. Good luck!!