I have my GPUs hooked up in parallel and I have no issues cooling them...am I missing something here :shrug:
His layout does not even look parallel.
Edit: Oh I get it hahahahahaha :ROTF:, output from same side as input :p:
yeah, that's true, but vapor did it with just a cpu on the loop.
anyway, i honestly don't think it would make THAT much of a difference, but i guess if u want to do it the "xtreme" fashion you would go for the most ""efficient"" way... theoretically speaking of course.
I voted other as I would move the pump, and do something like this:
http://i5.photobucket.com/albums/y16...uff/layout.jpg
Your layouts all seem to have too much up and down criss-crossing for me. I always try to route the loop in a circular up and down fashion, as this helps eliminate places for air to get trapped.