My suggestion is to save the $70+ on a liquid cooling kit and upgrade that Q6600 to a Q8300 or better. I still have my old Q6600 but it is a hot running chip. With a huge custom watercooling setup I was able to hit 4.1Ghz on it but the heat output was immense.
So IMO the best way to reduce heat and increase clock speed is with a new chip at lower microns. 65nm vs 45nm.
You could even get $70 to $100 for your Q6600 depending on step/revision.
i7 930 @ 4.2Ghz
GIGABYTE x58 UD7
Kingston HyperX T1 Series 12GB
GIGABYTE 7970 (1280/1800)
OCZ Vertex 2 100GB SSD & VelociRaptor 300GB
Last edited by ZenZimZaliben; Jan 5, 2011 at 08:06 PM.