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Cannot set AiO Pump speed below 60%
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cx5 View Drop Down
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    Posted: 21 Feb 2023 at 3:00pm
Originally posted by ynr ynr wrote:

Doesn't it need to have 4 pins in order to set the rolling speed? Can a 3 PIN PWM header set the speed?


3 pin is DC pump, regardless the bios is not perfect, if auto doesn't work, try DC, remember to safe and reboot, just in case this is needed to take effect.

mine is a PWM pump, but it does not go below 60%, but auto allows it to go below 60%, so try whatever combination you can.
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Points: 3687 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kerberos_20 Quote  Post ReplyReply Direct Link To This Post Posted: 21 Feb 2023 at 12:48pm
3pin doesnt have PWM, it relies on voltage, reducing pump speed reduces voltage, too low voltage and pump wont spin
pump rated voltage is 12v and rated pump speed is 4400rpm +-10%
there should be zero noise comming from pump

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Originally posted by cx5 cx5 wrote:

Originally posted by ghuji ghuji wrote:

Some people suggested lowering the Pump speed through BIOS, which did not work for me. I have plugged it into the correct W-Pump header and set it to W-Pump in BIOS . I also set it to DC since it's a 3-Pin Header (also tried PWM or Auto to see if it does anything to no avail).


Mine is a 4pin pwm, after set in bios to AUTO, it would go down below 60%, I've currently set it to 10% = 1800rpm in my case. 100% is 4200rpm, not noisy at all, but I don't want to shorten the pump life, hence idling PC is 10% = 1800rpm then 70C cpu will up pump tp 3000rpm.

Try again AUTO but safe bios and reboot into bios to check.


Doesn't it need to have 4 pins in order to set the rolling speed? Can a 3 PIN PWM header set the speed?
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cx5 View Drop Down
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Originally posted by ghuji ghuji wrote:

Some people suggested lowering the Pump speed through BIOS, which did not work for me. I have plugged it into the correct W-Pump header and set it to W-Pump in BIOS . I also set it to DC since it's a 3-Pin Header (also tried PWM or Auto to see if it does anything to no avail).


Mine is a 4pin pwm, after set in bios to AUTO, it would go down below 60%, I've currently set it to 10% = 1800rpm in my case. 100% is 4200rpm, not noisy at all, but I don't want to shorten the pump life, hence idling PC is 10% = 1800rpm then 70C cpu will up pump tp 3000rpm.

Try again AUTO but safe bios and reboot into bios to check.
x370taichi@3.50gen4
AX750 Optane900P SN770
3800x PosdonZro4 BarrowPWM-17w>420x140x28
XFX SWFT319 6900XT
MSI RX560 LP to get Fluid Motion BlueskyFRC 75hz
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Points: 3687 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kerberos_20 Quote  Post ReplyReply Direct Link To This Post Posted: 16 Feb 2023 at 10:13am
pump speed should run at full speed all time..if it makes noise, RMA it

Edited by kerberos_20 - 16 Feb 2023 at 10:13am

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ghuji View Drop Down
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Points: 20 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ghuji Quote  Post ReplyReply Direct Link To This Post Posted: 16 Feb 2023 at 4:27am
I recently bought an MSI Mag Coreliquid 280r which is making a very loud beeping noise. Some people suggested lowering the Pump speed through BIOS, which did not work for me. I have plugged it into the correct W-Pump header and set it to W-Pump in BIOS . I also set it to DC since it's a 3-Pin Header (also tried PWM or Auto to see if it does anything to no avail). When trying to go below 60% it just goes back up to 60%. Going above 60% works perfectly fine though. I am on a b550m Steel Legend.
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