I considered phase change for my CPU a while back. I had the money, I just wanted the LCS more xD. I did that some time back too. was sleeting outside if I recall, I put the intake for my case right to the open window and it got real cold right quick. Core idle got down to 9C and I think the GPU was at 14C This was on a 3.2GHz OC for my Q66 G0.
I'm headed into the paintshop. Got done modding some more of the CM690. Will post pics after.