GPU fan headers vs chasis headers

[Swiebertjeee]

So basically I wanted to deshroud my gpu and put two 120mm fans in the bottom of my case instead. (sff build) 

 

I have a vga adapter which I can use to route the fans to let my gpu control their speed, but I I would much rather use one of my chasis fan headers with an Y cable to control the fans based on gpu temp through software like speedfan or something. Now is there any downside to use chasis fan headers instead of the gpu header on the card? The reason I ask this because the people online I saw do this all use this adapter so I thought maybe there is a downside to sue chasis fans which I can not come up with. 

[DoctorNick]

If you use fan header from the chassis, then the gpu won't control fan speed. I would use this:

 https://www.moddiy.com/products/Mini-4-Pin-GPU-to-2-x-4-Pin-PWM-Fan-Adapter.html

[Stahlmann]

One big downside (imo) is that you're then relying on software control. Also i've never managed to get speedfan fully up and running without any issues. 

[Swiebertjeee]

1 hour ago, DoctorNick said:

If you use fan header from the chassis, then the gpu won't control fan speed. I would use this:

 https://www.moddiy.com/products/Mini-4-Pin-GPU-to-2-x-4-Pin-PWM-Fan-Adapter.html

Thats where speedfan comes in that case the gpu will cooled based on my personal curve instead of the pre configured curve. 

 

1 hour ago, Stahlmann said:

One big downside (imo) is that you're then relying on software control. Also i've never managed to get speedfan fully up and running without any issues. 

The upside is that I have more ease working on the hardware. Because the case (ncase M1) is small, whenever I work on the inside I need to remove the GPU. It would be easy to do if no fans are attached to it so I can easy get it out and put it back later. 

 

I remember using speedfan years back when I had a full watercooled system I don't remember any issues tho. 

 

I don't think I would mind using software to control it, after all I am already using MSI afterburner for my overclocks and diffrent gpu curves anyway. 

[DoctorNick]

3 minutes ago, Swiebertjeee said:

Thats where speedfan comes in that case the gpu will cooled based on my personal curve instead of the pre configured curve. 

 

The upside is that I have more ease working on the hardware. Because the case (ncase M1) is small, whenever I work on the inside I need to remove the GPU. It would be easy to do if no fans are attached to it so I can easy get it out and put it back later. 

 

I remember using speedfan years back when I had a full watercooled system I don't remember any issues tho. 

 

I don't think I would mind using software to control it, after all I am already using MSI afterburner for my overclocks and diffrent gpu curves anyway. 

I see. Why not just control it over motherboard then? I think your bios allows for custom fan curves?

[Swiebertjeee]

1 hour ago, DoctorNick said:

I see. Why not just control it over motherboard then? I think your bios allows for custom fan curves?

Does it? I thought it was just based on mobo temp. Never seen it based on cpu/gpu temp, or is there? 

[narrdarr]

I agree that relying on software is may not be the best, but you could do it. And if I were to use software I'd use fancontrol.

 

Bios cannot be set to read GPU temp.

 

Other options would be 

-use an offset fan curve based on cpu temp.

- get a corsair commander pro. Which is an independent fan, rub, and thermal sensing controller that you can use to set fan curve based on any sensor.

- best option would be to use the crj splitter to connect the fans to the GPU.

[LogicalDrm]

Speedfan might not work on modern boards. There are alternatives, like Argus Monitor and FanSpeed. But the options to use GPU temp sensor might still not be available.

[Swiebertjeee]

Okay thanks all, I have used the gpu header and fans run fine and run the cpu fans based on cpu temp on chasis fans

 

So I completely run without software now, I think it is the best choice based on what I've read