The most definite thing when using the mack daddy pelt is that U will generate big time heat on the hot side. Even with a waterblock, You will heat up your water big time and that increase will negate a lot of the cool effect of your pelt. I have a maze2 with the quarter inch copper cold plate. The pelt is sandwiched between the two and the waterblock takes the heat away. How I evened the score with that bad boy was to add a couple extra high capacity (and quietest I could find) fans and made a shroud for the radiator. Then (overkill IS good!) I cut a heatsink that would fit the front of the waterblock (around the hose fittings YUK) and put a proc fan on it. My sys is not as noisy as most even now BUT the heated water is now at a satisfactory temp and we are kicking butt on our settings. We are still in the fine tuning stage of a new sys but as you can see in the sig, we are achieving some nice numbers and they are getting better by the day! upon proper cooling so far we have a elcheapo 2500+amd barton and taken it from 1830mhz to 2450mhz totally stable and running like a clock. After Rad is done ( if ever ) we WILL get MORE! lol (he fired it up one time a few days back and the post screen showed 2750mhz but she just wouldn't get off her butt and boot, seems like more voltage is needed eh?)
Good luck on your project and hope if anything this may give you some good ideas for making your sys the mack daddy! Oh, and when you get going, OC that thing to the max!
Happy Trails
Tweaker and RadMan