How To Build A Water Cooled PC - Koolance
For a typical computer cooling loop with a 3-fan radiator and a few water blocks, any pump offered by Koolance should provide enough flow. Flow rate tends to be over-emphasized in PC cooling. For the majority of loops, effective flow rates higher than 1.5-2.0 LPM (0.4-0.5 GPM) won't contribute much, if anything, to thermal performance.