C70 stock fans speed !

[SuperKW]

Hi,

HWmonitor showing 3 different speed on my case fans,

 

Fan1 827 RPM

Fan2 1173 RPM

Fan3 1234 RPM

 

so is this normal or one of the fans is not working properly ?

 

Thanks

 

my system

gigabyte GA-Z77X-UD5H

corsair vengeance 16GB

i7 3770k @4.6

corsair H100i

GTX 680 x2

corsair HX850 PSU

[RAM GUY]

What fan is in what position?

[Mem11]

Hi,

HWmonitor showing 3 different speed on my case fans,

 

Fan1 827 RPM

Fan2 1173 RPM

Fan3 1234 RPM

 

so is this normal or one of the fans is not working properly ?

 

Thanks

 

 

I can't say if it's normal, but I have the same case and a similar MB(GA-Z77X-D3H) and my fan speeds are just about the same as yours. For me Fan1 is the one located on the lower HDD cage.

 

I have modified my case a bit and added two fans to the front, took out the upper HDD cage and relocated that fan to the top along with an 140MM fan. I figured I was getting the lower speed on Fan1 due to the push pull configuration on the lower HDD cage.

[RAM GUY]

It's pretty normal as long as the numbers within 10% tolerance. If the number is off by great number, such as 827 RPM compared to the 1200 RPM, this suggest different type of fans being used.

[SuperKW]

Thank you guys for the reply :)i just found out it was from SYS_FAN1, i plugged the fan to SYS_FAN4 and it works at full speed,i found this on my MB manual:

 

SYS_FAN1

1 GND

2 +12V /Speed Control

3 Sense

4 VCC

 

SYS_FAN2/3

1 GND

2 +12V

3 Sense

4 Speed Control

 

SYS_FAN4

1 GND

2 +12V

3 Sense

4 Reserve

 

also changed the fans with 3 AF120:D: