I have an A64 3800+ X2 I built for a friend who has decided to OC.. it hits 2.6G with no issues on stock cooling but the temps are in the midd to upper 60s in Prime 95. We are looking at three choices... Ninja Scythe Plus, Thermalright SI-120, and the TT Big Typhoon. Not 100% sure the Ninja will fit. Thanks for any input on this! His board is a Asus A8N-E, Antech Sonata, and Corsair LED XMS memory which is taller.