Help/Input Request: Running GPU Fans Off Of 4-pin PWN Motherboard Header

[stellarshy]

hi,

 

I recently purchased 4-pin GPU fan to 4-pin PWM motherboard header adapter, I'm wondering if it's going to work from my intended application:

 

https://www.moddiy.com/products/Mini-4%252dPin-GPU-to-4%252dPin-Fan-Adapter.html

 

I have a Zotac GeForce GTX 1070 TI Mini, and the fans are a little noisy and have no 0db mode at idle, so I'm wondering if I can use this adapter to run the fans on the video card off of one of my motherboard 4pin pwm fan headers.  Will it connect and work properly, pulling safe current and voltage? Will the video card still work if nothing is plugged into its pcb onboard fan header (for example, some systems won't boot up if there is no CPU fan detected)?  As long as the fan is spinning fast enough to keep the card under its T-junction temperature, I should not have any issues, is that correct? Thank you so much for any help!  Please see picture.

 

PS: last q:

Is the cable I bought essentially the same as this one? 

https://www.amazon.com/dp/B0713P7X78/?coliid=I3VIFYQ5MK1SLA&colid=3AW1YXBY1A6FK&psc=0&ref_=lv_ov_lig_dp_it

 

The card's connectors:

 

The adapter I bought:

 

[Neo-revo]

 it should work.  except if you don't set your own pwm curves  it may not perform as expected.

 

also, i would say that the two items you linked are identical.   they appear to be at least ( specs dont specify otherwise)

 

If the fan is to loud while connected to the GPU and PWM'ing  to temp. I'm curious to know what plugging the fan into a mobo slot will achieve, since it will still be the same fan making the same noise?

[stellarshy]

36 minutes ago, James Evens said:

how do you want to control it? you would need to bind the gpu temp to the fan header.

You could build a adapter since fan pwm is 5v.

 

 

37 minutes ago, Neo-revo said:

 it should work.  except if you don't set your own pwm curves  it may not perform as expected.

 

also, i would say that the two items you linked are identical.   they appear to be at least ( specs dont specify otherwise)

 

If the fan is to loud while connected to the GPU and PWM'ing  to temp. I'm curious to know what plugging the fan into a mobo slot will achieve, since it will still be the same fan making the same noise?

Thank you both for input.

 

1. Plan to control via Asus Qfan control:

profile 1 for linux, dc control, low-inaudible, no games, only idle; basically enforce 0db fan when idle since this card doesn't have it.

profile 2 for windows, bind to system temp conservatively (ramp up fast)

 

OR

 

Use this, https://www.amazon.com/dp/B01MSXN4VW/?coliid=I20X4PSD4YBI1I&colid=3AW1YXBY1A6FK&psc=0&ref_=lv_ov_lig_dp_it, then plug with another adapter back into card fan header?



 

[stellarshy]

42 minutes ago, James Evens said:

how do you want to control it? you would need to bind the gpu temp to the fan header.

You could build a adapter since fan pwm is 5v.

 

Thanks -- could you elaborate?  Like this?

https://www.amazon.com/ELEGIANT-12V-Temperature-Controller-Board/dp/B016OA7KNE

 

Like when people water cool, how does this work?

[stellarshy]

Actually, rather than ask you about my planned solution, maybe I can just tell you the problem and then get your expertise on what you might do to fix it.

 

Basically, I love this GPU I have, but it does not have a 0db fan stop mode when it is idle, which makes me very sad. If I could flip a switch and have it be off when the GPU who is idling and then go back to GPU-managed when there is load, that would be perfect. Thoughts on the best solution?

 

As described above, my idea was to control the fans with the motherboard, set them to low or off while in linux, and set them to basically run heavy all of the time when in windows for games.

 

By default, the gpu's bios will not let the fan go below 37%, which is like 1200 RPMs and seems unnecessary for idle when the heat sink does not even get warm.

[Neo-revo]

6 hours ago, stellarshy said:

Basically, I love this GPU I have, but it does not have a 0db fan stop mode when it is idle, which makes me very sad. If I could flip a switch and have it be off when the GPU who is idling and then go back to GPU-managed when there is load, that would be perfect. Thoughts on the best solution?

 

i cant speak to much experience in trying to have a silent system  much less a videocard that wont use it fans ( my gpu's have been under water for years now)  But what your trying to achieve seems like it is a limitation on the GPU's  programming part.

 

if you can find a temp-sensor output and send that to another header, you may be-able to  use bios controls to use the temp input as the PWM curve ( adjust to 0 fan under 25% load-or less (idle))    

 

I am still not sure how effective the setup would be, since the GPU with its own sensors, is the best way to PWM the fan IMO.

 

if controlling the fan speed is that important  (and you have the space), perhaps a fan controller with a slider (or knob)   would be the best solution with minimal effort to setup ( no programming for the most part)---  Only thing is if you did do this,  you would be the PWM-controller  and have to adjust up/down as needed

[stellarshy]

5 hours ago, Neo-revo said:

If controlling the fan speed is that important  (and you have the space), perhaps a fan controller with a slider (or knob)   would be the best solution with minimal effort to setup ( no programming for the most part)---  Only thing is if you did do this,  you would be the PWM-controller  and have to adjust up/down as needed

Interesting -- are there any fan controllers that have an external knob/slider on a pci bracket?

 

Are GPUs like CPUs in that they will auto-downclock if they get too hot, rather than overheat?

 

Thanks!

[For Science!]

2 hours ago, stellarshy said:

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If you have an Asus or MSI motherboard, you can stick a 2-pin temperature probe on the back of your GPU die, stick the 2-pin header into T_SENSOR1, have the 4-pin PWM fan header run off a generic header such as CHA_1 and set the temperature source to T_SENSOR1. Whether the BIOS lets you set the PWM signal to below the minimum RPM will depending on how your fans cope with Q-fan tuning, but that would be the way to control the fan correctly by the GPU die temperature.

 

Honestly, quite a shabby situation with potentially an overheating GPU. Wouldn't recommend it.

[stellarshy]

1 hour ago, For Science! said:

If you have an Asus or MSI motherboard, you can stick a 2-pin temperature probe on the back of your GPU die, stick the 2-pin header into T_SENSOR1, have the 4-pin PWM fan header run off a generic header such as CHA_1 and set the temperature source to T_SENSOR1. Whether the BIOS lets you set the PWM signal to below the minimum RPM will depending on how your fans cope with Q-fan tuning, but that would be the way to control the fan correctly by the GPU die temperature.

 

Honestly, quite a shabby situation with potentially an overheating GPU. Wouldn't recommend it.

Oh man, I do totally have an Asus motherboard and the temperature sensor in the box never used, I can definitely do this that way. I'm about 50-50 at this point, if I do it it will be just for the sake of experimentation and seeing how it works in addition to attempting to achieve the quiet. Thanks for the suggestions everyone.