it fits fine between my HSF and my memory, i wouldn't worry about it fitting. although the screws don't exactly line up, so you're not going to be able to use the mounts, instead you'll need a thermal pad or epoxy solution to mount the HSF. i have the blue orb on there right now, and it works fine, although i didn't notice much change from the default, so i still have it on there but simply use the heatsink and unplugged the fan (the 26dBa rating effectively doubles the noise emissions from my system).