OK it is definitely an issue just with the 3E-12NYS; I just plumbed in a Laguna pump and temp of unpowered CPU is right where it should be. Unfortunately 1.5 GPM is all it can muster wide open. Ok another odd observation is that the Little Giant doesn't cause interference when it is plugged in and close to the testbed but not plumbed into the loop. What the hell? One thought; I didn't have the motherboard in a grounded case before and now I do. I will put the Little Giant back in again now I guess.
I tried putting a ground wire from the pump to a running PSU cover that was on a separate protector. No difference. Why would it cause problem when in the loop but not when sitting right next to the system?
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