First I wanted to give Martin from TFC a big thanks for providing me with this prototype for testing, I'm very fortunate to be so lucky!

Here is my full review with pressure drop testing and my exhaustive thermal testing.
FULL REVIEW LINK
http://www.martinsliquidlab.com/The-...80-Review.html

Here is a quick summary of my findings:

First a few pictures:

A beatiful and very large dual row, dual pass quad optimized for low speed fans.



A nice bleedscrew for you inverted barb installers.

PRESSURE DROP TESTING



I used their supplied compression barbs for 1/2" ID 3/4" OD tubing:


And the results are an exceptionally low pressure drop, very nice!


THERMAL TESTING RESULTS



Comparison of thermals to the 480GTX:

It's dominating the slow speed fans and they are equal at 1880RPM.

Looking at what that means using some assumed system heat loads for comparison:


Here is the fan preference poll I started:
http://www.xtremesystems.org/forums/...d.php?t=193649

It appears something like 80% of the users prefer using the 1550RPM or slower fans, so it's really optimized well with the more open fin structure.

Just when I think I'm done tearing apart my system, now I've got another new radiator to install permanently...

Cheers!
Martin