"Huge" is such a subjective word. We use stuff in the 12,000 gpm range occasionally for work. Folks, when the power you're putting the pump is higher than the energy from the CPU you're chasing down the wrong pathway.
I've got a "little" pump I use at work that's rated for ~55' TDH at 10 gpm. It only cost $228 with OEM discount (230VAC/3ph, single phase available). It has 1-1/4" suction and discharge ports. If anyone thinks such a pump has a place in watercooling a PC, they are sadly mistaken. Nonetheless, it's available from Gorman-Rupp as an off-the-shelf item. Just check out their "ATM" line of pumps.
I'm seriously thinking of using the single phase version for a hefty pond project.
Anyone asking about how to fit one of these into a watercooled PC is either nuts or has no idea what they are doing.
Oh, and you're wrong Bill. I just served up cheese, crackers, and sausage to all the co-workers to celebrate a new product launch (our third kid arrived Nov 20). May not be up to your standards of "lunch", but hey, I'm cheap and it was my nickel. LOL.
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