there is also the Zalman 7000cu all-copper which i decided to go with for my 2.4C. i can't give ya temps yet, cause i'm still waiting for my Artic Silver 3, but there are about 4 popular ones i've read about. the most popular seems to be the SLK900 with a 92mm fan that pushes about 60-70cfm's at about 35db.