can't comment on nozzles yet other than saying that I suspect ROKK knows what he is talking about as the RBX designer. Here are my comments in that thread:
"I tested the RBX with the nozzle that came with it (#1). I was later told by Dangerden that this isn't the best nozzle for cooling a single CPU but instead is a balance for users with multiple blocks. Dangerden recommends the #4 for better performance when using only a CPU block. I have the nozzle package for the RBX and I will eventually write a separate review testing them all. I spend 3-4 8 hour days of testing per waterblock (or per nozzle in this case) and so it will take me several weeks of testing to compare all of the nozzles (I can't run 7 days/week with all my other duties in life).
I felt that the readers would be better served by testing several common blocks first and then returning to the effects of nozzle on RBX."
And here is the thread in question:
http://www.ocforums.com/showthread.p...hreadid=266384