How to control speed of case fans

Livewire88

Livewire88

Livewire88

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Hi everyone,

I recently upgraded my PC case, the new case has three extra fans. The whole PC now runs a lot louder than it did in the old case and I would like to make it quieter.

The three fans at the front are daisy chained together, then connected to a fan header in the back of the case which is attached to the motherboard. I think this may mean the speed of these fans cant be controlled because the are not attached directly to the mother board?
There are also two fans under the GPU (separate from the three GPU fans) that draw air in, they are also connected to the fan header in the back of the case, which again I assume their speed can not be controlled.

The CPU AIO is connected directly to a Addressable Gen 2 header on the motherboard, the rear exhaust fan is connected to a second Addressable Gen 2 header on the motherboard. Am I right in saying the Addressable Gen 2 headers allow the fans speed to be controlled? or have I got that wrong?

I would like to be able to control the speed of the three fans at the front and the two fans under the GPU, so they are not running at full speed all the time. My GPU temp holds under 50degrees the whole time whilst playing demanding games so I think there is room for the fans to be slowed down a bit?

The motherboard I have is a TUF Gaming X670E - Plus WIFI

Any help would be appreciated.
 
You should be able to control the speed of fans connected to the motherboard, addressable gen 2 header is for argb not fan speed I thought.

If you go into your bios and look for system fan or whatever the name of the headers the fans are connected to are called you should be able to control them.
 
WARburton said:
what is your new case?
Click to expand...

The Antec Fluz Pro, the previous case was a Lian Li 215.

GeorgeStorm said:
You should be able to control the speed of fans connected to the motherboard, addressable gen 2 header is for argb not fan speed I thought.

If you go into your bios and look for system fan or whatever the name of the headers the fans are connected to are called you should be able to control them.
Click to expand...

That makes sense thank you. So if I can get the front three fans that are daisy chained and the two at the bottom plugged into motherboard "fan header's" that should do the trick.

All of the fans are RGB so can I leave them connected to the "external" header via the RGB connectors?
 
GeorgeStorm said:
If you go into your bios and look for system fan or whatever the name of the headers the fans are connected to are called you should be able to control them.
Click to expand...
Looks like the fans are attached to a fan hub with a PWM cable to the motherboard.

You should be able to set a fan curve in bios like Georgestorm said, but don't think you can control individual fans, they will all run at the same speed. (i may be wrong though)
 
freddie64 said:
Looks like the fans are attached to a fan hub with a PWM cable to the motherboard.

You should be able to set a fan curve in bios like Georgestorm said, but don't think you can control individual fans, they will all run at the same speed. (i may be wrong though)
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Thank you, I did go into the BIOS but it looked like the only fans it was reading the speed of was the AIO (Arctic freezer) and rear exhaust fan. The fan hub was attached to the motherboard with a PWM cable, so maybe I need to change some setting in the BIOS.. which I am worried about messing up!

Fingers crossed I can work it out with help from here, otherwise I will have to just take it to a shop for them to sort.
 
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freddie64 said:
Looks like the fans are attached to a fan hub with a PWM cable to the motherboard.

You should be able to set a fan curve in bios like Georgestorm said, but don't think you can control individual fans, they will all run at the same speed. (i may be wrong though)
Click to expand...

If I have this right, I should just connect the 4 pin connector at the end of the three fan daisy chain directly into a fan header on the motherboard. Leave any RGB connectors to the "external" header (there are not enough RGB ports to plug directly into the motherboard) the same with the two fans below the GPU.

Should I run the fan curve off the CPU or GPU temps? The rear exhaust fan curve is running off the CPU fan/AIO temp.
 
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Quartz said:
The fan hub may require power. They often use a SATA power connection.
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I think I may have been wrong saying it was connected with a PWM cable, the hub is currently powering five RGB fans so it must be connected with a SATA cable. Think my issue is any fans that are connected to the hub are not speed controllable.
 
Ch3m1c4L said:

Fan Control - A highly focused fan controlling software for Windows

Fan Control is a free software that allows the user to control their CPU, GPU and case fans using temperatures.
getfancontrol.com getfancontrol.com
If it can be controlled where it is currently plugged in, that can do it (might need plugins)
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Will give this a go. I assume it will automatically detect what fans are speed controllable? so if it just detects the one that already are controllable, the connectors will need moving directly onto the motherboard.

I have plenty of spare fan header on the motherboard anyway. Just no spare RGB headers, so they can stay connected to the hub.
 
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Seems like a lot of people are having the same problem with the fan hub.

What you could do is use the hub for RGB only and attach the fans direct to the motherboard (You may need PWM splitters).

Try the fan control software first though, but if your bios is not detecting the fan hub, i can't see it working.

EDIT

Looks like you have already come to that conclusion.:)
 
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All your case fans are controllable by the BIOS/software via PWM control. The case has a hub into which 5 fans can be connected, presumably the three front fans are daisy chained? So that’s 1 of the PWM connectors taken up. Are the lower 2 fans also daisy chained? So that’s 2 connectors on the hub occupied? Then the single rear fan taking up another slot, so 3 in total?

Then you’ll have the sata connector from the hub to power it, then a 3 pin Argb cable from the hub for the lighting, then a 4 pin PWM connector from the hub to the motherboard for overall fan control.

If it is setup as above, you just modify the fan curve in the bios or with software for that one PWM connector the hub is plugged into which will control the speeds for all the case fans.

If you want finer control for the different case fans, so 1 curve for the front fans, another curve for the bottom etc then you’ll have to forgo plugging them into the hub and plug them directly into the motherboard headers.
 
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VaderDSL said:
All your case fans are controllable by the BIOS/software via PWM control. The case has a hub into which 5 fans can be connected, presumably the three front fans are daisy chained? So that’s 1 of the PWM connectors taken up. Are the lower 2 fans also daisy chained? So that’s 2 connectors on the hub occupied? Then the single rear fan taking up another slot, so 3 in total?

Then you’ll have the sata connector from the hub to power it, then a 3 pin Argb cable from the hub for the lighting, then a 4 pin PWM connector from the hub to the motherboard for overall fan control.

If it is setup as above, you just modify the fan curve in the bios or with software for that one PWM connector the hub is plugged into which will control the speeds for all the case fans.

If you want finer control for the different case fans, so 1 curve for the front fans, another curve for the bottom etc then you’ll have to forgo plugging them into the hub and plug them directly into the motherboard headers.
Click to expand...

Yes front fans are daisy chained onto the hub, lower 2 fans wont daisy chain so they are both connected to hub separately. The rear fan cables wont reach the hub, so are plugged into the mother board.

The hub is connected as you describe in second paragraph.

When I checked the BIOS yesterday I do remember there was an option to set to PWM from "Auto" I didn't know what that meant so left it alone. I will have a play and change it to PWM and see if that opens up more fan control options.

All I am after is speed control for the three front and two lower fans, that should quieten things down a bit I hope. I was debating removing the lower two fans as my temps are very low anyway.
 
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If you change the PWM from auto, you can then set fan curves at various temps and fan speeds, for whatever is connected to the motherboard. You can set them independantly as well normally.
 
VaderDSL said:
All your case fans are controllable by the BIOS/software via PWM control. The case has a hub into which 5 fans can be connected, presumably the three front fans are daisy chained? So that’s 1 of the PWM connectors taken up. Are the lower 2 fans also daisy chained? So that’s 2 connectors on the hub occupied? Then the single rear fan taking up another slot, so 3 in total?

Then you’ll have the sata connector from the hub to power it, then a 3 pin Argb cable from the hub for the lighting, then a 4 pin PWM connector from the hub to the motherboard for overall fan control.

If it is setup as above, you just modify the fan curve in the bios or with software for that one PWM connector the hub is plugged into which will control the speeds for all the case fans.

If you want finer control for the different case fans, so 1 curve for the front fans, another curve for the bottom etc then you’ll have to forgo plugging them into the hub and plug them directly into the motherboard headers.
Click to expand...
Final question, if you don't mind.

What temperature would you recommend I set the front three and lower two fan curve against? CPU or GPU? the AIO and exhaust fans are already set against the CPU.

I guess the lower two should be set to GPU curve as they are drawing air to the GPU fans. Not so sure about the front fans?
 
Livewire88 said:
Final question, if you don't mind.

What temperature would you recommend I set the front three and lower two fan curve against? CPU or GPU? the AIO and exhaust fans are already set against the CPU.

I guess the lower two should be set to GPU curve as they are drawing air to the GPU fans. Not so sure about the front fans?
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I'd set the two lower fans against the GPU temps if possible and the front against the CPU personally. You can have the lower fans run pretty slow most of the time, best bet would be find out how hot the GPU gets when browsing and set the idle temp/fan speed above that so they don't spin up until the temps go higher during gaming.

For the front fans do the same, find out the temp of the CPU when browsing and set the front fans to ramp up above that temp, that way you get a quiet fan curve until you need it, i.e gaming etc.
 
VaderDSL said:
I'd set the two lower fans against the GPU temps if possible and the front against the CPU personally. You can have the lower fans run pretty slow most of the time, best bet would be find out how hot the GPU gets when browsing and set the idle temp/fan speed above that so they don't spin up until the temps go higher during gaming.

For the front fans do the same, find out the temp of the CPU when browsing and set the front fans to ramp up above that temp, that way you get a quiet fan curve until you need it, i.e gaming etc.
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I went back over all the connections.. turns out I didn't plug the fan hub into the motherboard, only the RGB plug for the hub.

Ran an auto fan calibration in Armour Crate. What a difference, the fans are barely spinning now and the PC is almost silent. Quite unnerving now when playing games as I'm constantly watching the temps!

Always worrying about something! but its worth it. Cheers for the help.
 
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