[SOLVED] 2x4pin cpu fan power connector

[Trinity88]

I have a motherboard “biostar z170t” comes with 2x4pin cpu fan header named “cpu_fan1” & “cpu_fan2” and i have “V8 gts” cpu cooler and comes with two fans and each fan comes with 4pin connector also. should i connect them on 1 cpu header using y splitter or should i connect them separately? Im asking for which is better, thank you.

 

[vcc98554vn]

you should connect each fan to each header to get the full performance of the fan

 

[Trinity88]

Ahh okey. Anyway can you tell me if these two cpu fan header will run my two cpu fan at same speed and voltage? are they will synchronized as well?

 

[vcc98554vn]

Ahh okey. Anyway can you tell me if these two cpu fan header will run my two cpu fan at same speed and voltage? are they will synchronized as well?

i think it will run at same speed and you can set the fan speed and voltage in the bios

 

[Trinity88]

So its better to attached them separately? anyway im running with smartfan enabled i dont like to change some fan speed.

 

[vcc98554vn]

So its better to attached them separately? anyway im running with smartfan enabled i dont like to change some fan speed.

yes , sir

 

[Trinity88]

Thank you, Is it true that 1 cpufan header max output of 1A in most motherboard? If that is the case, anyway can you explain why it will reduced the performance of the 2 cpu fans while attaching it to 1cpu header Using Y splitter since my 2cpu fan controller consumes 0.31A only?

 

[vcc98554vn]

Thank you, Is it true that 1 cpufan header max output of 1A in most motherboard? If that is the case, anyway can you explain why it will reduced the performance of the 2 cpu fans while attaching it to 1cpu header Using Y splitter since my 2cpu fan controller consumes 0.31A only?

maybe it will have some voltage drop with full speed fan but i think if it have enough header you should connect each to each

 

[Trinity88]

Thank you so much.

 

[vcc98554vn]

Thank you so much.

no probelm man

 

[Trinity88]

Anyway Ive attached it already separately and after i checked the bios they have different RPM and i already disable smartfan and still different rmp

 

[vcc98554vn]

Anyway Ive attached it already separately and after i checked the bios they have different RPM and i already disable smartfan and still different rmp

It normal , you can use speedfan software to modify it

 

[Trinity88]

Is there any way that they will have the same RPM Speed using the bios? Not using any software?

 

[vcc98554vn]

Is there any way that they will have the same RPM Speed using the bios? Not using any software?

Find the setting that control your fan in pwm , enable smartfan

 

[Trinity88]

Done alredy enabling smartfan, automatic and manual still different RPM.

 

[vcc98554vn]

Done alredy enabling smartfan, automatic and manual still different RPM.

you need to set it on the same number of rpm

 

[Unolocogringo]

Done alredy enabling smartfan, automatic and manual still different RPM.

How much difference.
It is almost impossible to get 2 identical fans to run exactly the same rpm, even when connected to the same fan header.
Fan specs are usually +/- 10%.
So a 1200rpm fan can run 1080-1320 rpm and still be within manufacturers specs.