Question arctic liquid freezer III cpu fan speed detection error

[Elliah246]

I have read many threads about this same problem i'm facing. Including the one's from tom's.
It didn't help me solve it.
I already tried setting the bios specific setting to ignore but this didn't solve anything. It also sucks to disable a minimum fan speed for cpu cooling, this can't be a serious solution.
Currently i'm using the all-in-one cable, since the bios setting isn't a solution the only option left is to try the individual control cable.
The individual control cable has 3 headers.
PUMP
FAN
VRM
Both pump and fan are self explanatory to me. What's VRM?
And finally, where on my ASUS ROG STRIX B850-E motherboard do i have to plug-in all these 3 different headers???

 

[Elliah246]

does the bios know the reported speed is 50% lower than the real speed?

 

[Elliah246]

MB: ROG STRIX B850-E
Radiator: Arctic liquid freezer III 360

Currently using AIO single header cable. Problem is bios error fan speed detection failed.
Solution? Can i try plugging AIO pump cable into cpu_fan instead of aio_pump or wont this work at all and is there risk doing so?
Solution2, try the cable with pump, fan and vrm header. But i dont know where to connect those !! Everyone on the internet says something different.
Where does pump go?? Where does fan go and where vrm, how come there is no answer on the internet?

 

[Lutfij]

You've received advise on how to connect the AIO's harness here;
https://forums.tomshardware.com/thr...t-boot-after-enable-xmp.3877137/post-23464916

Please stick to one thread to avoid spaghetti brains.

 

[Elliah246]

spaghetti brains, thats how i felt trying to figure out where all the cables go.
fine fine, back to the previous thread!

 

[Paperdoc]

You certainly CAN get this to work with the All-in-One cable. Your problem is WHICH mobo fan header you use.

That system has three cooling devices to power up and control - its pump, the rad fans, and a small fan on top of the pump unit that cools the VRM (Voltage Control Module) parts inside the pump module. If you use the All-in-One cable, all three of these are powered by one mobo host header, and control of each of those three is done by the pump unit itself, based on the fan speed signal it gets from the mobo header.

Any mobo fan header ALSO has an important second function: it monitors the speed signal sent back to it from its "fan" for NO speed, indicating FAILURE. IF that happens it pops up a warning on your screen so you know there is a problem to fix. The CPU_FAN header on many mobos will do even more that that, though. It MAY shut down your system entirely if it gets NO fan speed signal to prevent your CPU chip from overheating and permanent damage. In your case you ARE getting the warning of no speed at that header, but it has not shut you down yet.

Why? Because you have NOT connected anything to your CPU_FAN header! Your AIO system instructions tell you to plug the All-in-One cable into the CPU_FAN header, BUT you chose instead the AIO_PUMP header. Simply MOVE that cable to the CPU_FAN header as instructed, and it will work.

By the way, when you do this the SPEED signal that gets to that header and is reported to you as the "CPU Fan Speed" is the speed of one of the RAD FANS. (The header can deal with only one speed signal, so only ONE fan's speed is sent there.) You will never "see" the pump speed or the VRM fan speed anywhere because the circuits in the pump unit do NOT send those speeds anywhere.

I consider that using the three-headed cable option on this system is NOT for newbies. It allows you to fine-tune control of those three cooling devices separately, but there are complications in that so you really need to know how to use that ability. NOT knowing all the details can cause you problems. For someone who does not need that complexity, the All-in-One cable system is much better IF you use it as told.