It works, but now with a Overclocked P4 instead of an overclocked PIII Celeron, it's now about 10° C higher on my rig.
I would expect this actually. The PIII Celeron was only a 900 Mhz model overclocked to 1.1Ghz. The P4 is a 2.66Ghz model overclocked to 3.00Ghz. So there is a three fold jump in Mhz and the voltage is almost the same.
I will be returning the 340 pump today in exchange for the 90 most likely. I will post a reply here to let everyone know how it works out.