PWM Arctic 7 fan to 3 pin?

[mediamatt]

Hi,

I have a G3258 cooled by an Arctic 7 and that has a fan with a 4 pin PWM connector. My motherboard only has 4 pin connectors, no 3 pin. My processor fan ramps up and down when something decides to increase the cpu load. How could i get it so the fan is in silent mode/low speed permanently despite cpu load? Would getting a 4 pin to 3 pin connector work and then just connect the 3 pin to the 4pin connector on one side?

Matt

 

[doyll]

Hi Matt,

I would strongly advise to not set the fan to never speed up. It speeds up to protect the CPU from over heating. Most motherboards have software so you can adjust the heat to fan speed ratio. What mobo do you have?

3-pin fans fit onto 4-pin headers no problem. Both header and plug are made to do that.

Don't be fooled and think 4-pin headers are not actually 3-pin fan headers. On most motherboards the only 4-pin headers that are PWM are CPU fan headers. All others are usually 4-pin headers only using the 3 pins for 3-pin fans

 

[mediamatt]

Hi,

Thanks for the reply. The motherboard is Asus H81i Plus ITX. Nowhere in the settings can i find a way to stop the spikes in fan speed. I have set the cpu fan profile to silent but when the cpu load ups, the fan speed spikes. I know the speed is to protect the fan but i would prime it and adjust the speed until it cools adequately and leave it at that speed permanent. Its not so much the fan speed that bothers me, its the sudden change in sound as it ramps up.

Matt

 

[doyll]

I think you can set-up custom fan curve in ASUS Fan Xpert. I don't have a newer Asus so can't be sure, but most decent mobos have software for this.