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PWM via speedfan broke after new mobo

Dispentry
By Dispentry
in Cooling
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Hello all,

I have a Cooler Master Hyper TX3,

My CPU fan is a 3 pin fan (so no pwm) and my old motherboard had a 3 coonnector. I was still able to change the speed of the fan trough speedfan, though

My new motherboard has a 4 pin fan controller and i connected my cpu fan correctly (aligning it with the little tab) however this caused my cpu fan to be stuck on 100% all the time. Please help?

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Does your motherboard have an option in the UEFI to switch headers between PWM and DC control?

If not, then that's too bad and there is nothing you can do other than buy a fan controller.

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I don't know. My motherboard is from 2011 and i still have BIOS. (although i do have win10) by the way i meant my casefan is at 100% and my cpu fan is fine i'm sorry

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Connect the fan to CPU_FAN on your mainboard. Go into the BIOS / UEFI and set the CPU_FAN header to voltage control and not PWM control, which seems to be activated currently.

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What motherboard do you have?

SpeedFan didn't break. Fan control is specific to each motherboard and their respective headers.

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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19 hours ago, maybethisnamewillwork said:

PWM header supplies 12V continuous, you have to use header that does voltage control.

Correctly incorrect. PWM and 3pin headers are same by default. PWM has extra pin for more accurate control. So both will be 12V by default.

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4 hours ago, LoGiCalDrm said:

Correctly incorrect. PWM and 3pin headers are same by default. PWM has extra pin for more accurate control. So both will be 12V by default.

Yes, but I mean't that you can't control 3pin fan from 4pin header as the speed regulating is done by PWM switching instead of voltage control. Unless there is a feature in bios to change between PWM / DC mode.

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13 hours ago, maybethisnamewillwork said:

Yes, but I mean't that you can't control 3pin fan from 4pin header as the speed regulating is done by PWM switching instead of voltage control. Unless there is a feature in bios to change between PWM / DC mode.

Not all 4pin headers are pwm. 

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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Sorry for not replying ^^

I don't have voltage control option in my bios as far as i know. I'll scour trough the menu's again tomorrow. Also, it's already connected to the CPU fan header.

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1 hour ago, Dispentry said:

Sorry for not replying ^^

I don't have voltage control option in my bios as far as i know. I'll scour trough the menu's again tomorrow. Also, it's already connected to the CPU fan header.

What motherboard do you have?

You need to quote a post or tag a member or else they won't get a notification you replied to them.

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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1 minute ago, WoodenMarker said:

What motherboard do you have?

You need to quote a post or tag a member or else they won't get a notification you replied to them.

Foxconn H55M-S

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1 minute ago, Dispentry said:

Foxconn H55M-S

Both available fan headers on the board and pwm and aren't appropriate for controlling a 3pin dc fan. 

If you would like to lower the speed of the cpu fan, either fan controller or a molex fan adapter with swapped pins for a 5v signal would be my preferred method.

You can also choose to get a pwm fan. 

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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11 minutes ago, WoodenMarker said:

Both available fan headers on the board and pwm and aren't appropriate for controlling a 3pin dc fan. 

If you would like to lower the speed of the cpu fan, either fan controller or a molex fan adapter with swapped pins for a 5v signal would be my preferred method.

You can also choose to get a pwm fan. 

Luckely, as my cooler is a CM hyper tx3i evo, i can swap out the fans. Know any good 90mm fans with pwm? (not too expensive)

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1 hour ago, Dispentry said:

Luckely, as my cooler is a CM hyper tx3i evo, i can swap out the fans. Know any good 90mm fans with pwm? (not too expensive)

Best performance and noise: Noctua NF-A9 or B9

- Brown and tan colored (regular) version >> http://www.newegg.com/Product/Product.aspx?Item=9SIA9PV3Y64160

- Redux, gray colored version >> http://www.newegg.com/Product/Product.aspx?Item=N82E16835608058

 

Not a good performing, but should work just fine:

GELID FN-PX09 >> http://www.newegg.com/Product/Product.aspx?Item=N82E16835426005

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7 hours ago, Dispentry said:

Luckely, as my cooler is a CM hyper tx3i evo, i can swap out the fans. Know any good 90mm fans with pwm? (not too expensive)

Where are you shopping/located?

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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3 hours ago, WoodenMarker said:

Where are you shopping/located?

The Netherlands lol :P

Also i scoured my bios, it does have fan options, but they're greyed out, so i am assuming it'd need pwm fans.

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1 hour ago, Dispentry said:

The Netherlands lol :P

Also i scoured my bios, it does have fan options, but they're greyed out, so i am assuming it'd need pwm fans.

F9 PWM: http://techworld.co.nz/arctic-92mm-case-p-40796.html

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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