Fan case

[Merryginal]

Hi guys, I tried to search in a lot of different forum but I've found nothing for my problem, I hope someone can help me here.

My pc is 2 month old and everything run fine but Im worried about the fans case, I mean in my other case fans was a bit loud (but I dont care) but spinning fast and case was cold inside, then I switched to my bitfenix ghost and fans are so slow...and its hot in there !

I dont know why...I can heard the CPU fan spinning faster while playing or doing things but the 2 other fans + my Noctua (NF-F12) is slow all the time, the air that comes out is hot especially after 1-2h+ playing (it was great in the other case).

It doesn't seems my motherboard is supposed make my fans spinner faster or not, its this one : http://ca.gigabyte.com/products/product-page.aspx?pid=3996#ov

So I dont know what to do...my bitfenix cost me a lot and the other one was a cheap one, am I suppose to take the other one anyway ?

Hope I'll get an answer, thanks !

 

[sneekypeet]

depends on the fan header used. Some are full power all the time, and some are PWM controllable by bios. Look in the manual and see what the headers are called that you are using to power these fans.

 

[Merryginal]

Well there is nothing about fan in the manual, its juste an installation guide, it show how to install fan but thats it...
The Noctua is PWM by the way !

Edit : on the website I can read its this model : Whisper-Quiet Spectre™ Cooling and apparently Spectre serie are PWM.

 

[sneekypeet]

does this look similar?

My guess is that you have the CPU cooler plugged into the PWM CPU header, as you should. Then you are using the PWR header which supplies 12V constant, and the others are on the SYS_Fan headers. The latter headers usually will offer options in bios for 12V, PWM, and sometimes even more control.

 

[Merryginal]

Yea Its absolutely my motherboard.

 

[sneekypeet]

read the bit under the image I edited in

 

[Merryginal]

Haha ok Im kind of lost with what you are saying so let me tell you how my fans are connected :

CPU in the CPU_FAN (top of the image)

Fan in the back is in SYS_FAN2 (bottom of the image)

Front fan and Noctua are both connected in the SYS_FAN1 with a PWM Y-Cable.

And in case you want to know there is no difference with the noctua or not, fans are still slow.

Edit : HOOOOOOOOOOOO in fact its absolutely possible that the problem come from my bios setup, right ?

Edit 2 : PWM is already activated in bios, I have downloaded EasyTune6 and now it seems that the noctua use the PWM system. The 2 other are still slow, maybe they dont use PWM and are just slow...but it seems super weird.