I bought 2 high dollar PWM fans and with BIOS system smart fan enabled they had a buzzing noise at low RPM. This disappeared at full speed. Finally I just went with this 3-pin, and it is fine at full speed.
Finally a quiet enough 140mm fan! I bought five supposedly quiet 140mm fans, but only this on is acceptable. I have it hooked to the 4-pin system fan post on my GA-970A-UD3 motherboard, and have the system smart fan disabled on that post. It shows 785...
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