It seemed like the best place to post, since my questions was about the effects of water cooling on cpu temps. Also, I had no replies to the same question when I posted in the CPU forum.
I have my CPU cooled by an H100 in a 650D. I have the 2 stock fans pulling and 2 Enermax 120mm fans pushing. There wasn't enough room to mount the block with the push/pull initially, so the 2 stock fans are mounted on top the case.