I recently got:
http://www.newegg.com/app/ViewProduc...108-021&depa=0
And threw a vantec tornado on it, oced my 2.6 20% and never break 96 F.
however, the newest and best option is:
http://www.frozencpu.com/cpu-tri-22.html?id=WcSKtvXZ
but you have to reinforce the mobo or suspend the heatsink a little because its so heavy.