components possibly incorrectly connected to msi b350m gaming pro mb???

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Alonk379

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Mar 9, 2017
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Im a noob who chose to get a prebuilt system instead of building it myself because(believe it or not where I live, getting a prebuilt machine is much cheaper). My motherboard is a b350m gaming pro and i have 2 problems.
1: i can't manage to sync my cpu fan's lighting with my gpu's lighting even though thats a functionality that was advertised as being achievable through the mb.
2: My 4 case fans are always running at the same speed (quite fast and therefore loud even when my cpu and gpu are under virtually no load and is under 60 degrees celsius) even though the mb is supposed to regulate it. please help me...this is the 1st proper machine i've ever owned
 
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Seanie280672
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Seanie280672

Seanie280672

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Mar 19, 2017
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Download MSI Command Centre, once installed, open it and select the auto fan tuning option, that will sort the fans out.
Be sure to get version 3.0.0.21, not the newer one, its doesnt work properly, and also ignore the update to 3.0.0.23. https://forum-en.msi.com/index.php?topic=283828.0

as for syncing the RGB colours, download MSI gaming app, once installed, open it, select the LED option and see if you can sort it in there, you can get the latest gaming app from the link above too.

 
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Alonk379

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Mar 9, 2017
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I tried to do both those things. command centre only picks up my cpu fan and the leds don't sync effects (not really that imporrtant tbh)
 
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Seanie280672

Seanie280672

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Mar 19, 2017
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Sounds like they have used 3 pin fans instead of 4 pin pwm fans then.

In Command Centre, click on system fan button as see if it can see the other fans there.

 
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Alonk379

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Mar 9, 2017
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only 2 out of 4 fans appear there but it says the current rpm is 0 even though i am currently watching them spin at a few hundred rpm as i type this
 
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Seanie280672

Seanie280672

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Mar 19, 2017
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Are you able to see them in the bios under hardware monitor ?, there are some settings there, some tick boxes to enable smart control and PWM - DC mode.
 
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Alonk379

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Mar 9, 2017
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hardware monitor also only picks up 2 fans that are always on 0rpm. I changed them from dc to pwm and activated smart speed controller but they're still at 0 rpm even though irl i have 4 fans that are way above 0 rpm
 
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Seanie280672

Seanie280672

Estimable
Mar 19, 2017
1,958
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2,960


Are the fans 3 pins fans with 3 wires going into the plugs or 2 wires going in, if they have 3 wires going in, use DC mode and lower the pink ball in the bios to drop down the voltage supplied to them, this in turn will slow them down.

If they are 4 pin plugs with 4 wires going in, they are PWM fans, use PWM mode with smart fan enabled.

Are these fans plugged into the motherboard or are they connected by molex connectors ? can you post a picture.


 
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Alonk379

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Mar 9, 2017
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3 pins and 3 wires. I don't think they're connected to the motherboard, which is probably why I can't adjust them from the bios. I would post a picture but trust me when I say the cable management is confusing. Thanks for the help!
update: I just checked and the motherboard has only 2 system-fan headers which aren't connected to anything which means my fans are connected to the psu
 
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Seanie280672

Seanie280672

Estimable
Mar 19, 2017
1,958
1
2,960


Yeah thats kind of what I was thinking, they are 3 pins, so theres a red, black and yellow wire, the yellow is the RPM signal wire, the red is 12v and black is ground.

As you say the motherboard reports zero rpm, then they are not plugged into the motherboard headers, sounds like they are plugged into 3 pin to molex converters, and then connected direct to the PSU, forcing them to run at a constant 12v or 100%.

theres one header up the top by the CPU socket, thats the CPU fan header, leave that one alone.

thers a header down by the bottom left of the board, what you can get is a 3 pin fan splitter so you can connect 2 of the fans to this header, it will look like this, dead easy to make one yourself if you have any parts laying around: http://www.ebay.co.uk/itm/3-pin-Fan-Y-Splitter-Cable-30cm-Braided-Black-Sleeving-Internal-PC-Computer-Lead-/252388493443?_trksid=p2385738.m2548.l4275

And then there is another header just sitting above the top PCI-e x1 slot, which you can plug the other 2 fans into using a splitter too.

you'll then be able to control the speed of them using DC mode / voltage adjustment.
 
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