I would get deltas, but the wife complains enough about fan noise from my CPU at max speed and the 4870s spinning at 60%. Plus the price. I picked up my current fans in a 3-pack locally for $30 or so. My 212+ clears the memory by up to a 1/4" depending on how high i can clip the fans on and still have the entire fan surface blowing into the fins, so I can put the bigger fans on. I want to, but not sure they would last long, hah.