said by DarkLogix:
Is it possible that the pump wasn't running at full speed?
there could be some odd wiring in the pump that causes it to require a fan to be pluged into its plug
Yes, it should be plugged into a molex plug OR into the 4-pin CPU header with all throttling/speed altering options disabled in the BIOS. I'm not sure about the newer pumps, but my H70 pump runs at 1,430 RPM's.