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Old 05-14-2019, 12:07 PM
pdebaum pdebaum is offline
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Join Date: Feb 2019
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POST ID # = 1004559
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Yep, similar sound on mine too. It has to be from the pump(s).

FYI, the fixed CPU fan speed as reported from motherboard does not represent anything real. The pump circuit outputs a fixed constant voltage level through a single return wire to the monitoring pin of the CPU fan header on the motherboard, just so that the BIOS does not freak out if it doesn't detect a connected fan.
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