Overclock.net › Forums › Intel › Intel Motherboards › Asus P8Z68-V Fan Header and Fan Control Questions
New Posts  All Forums:Forum Nav:

Asus P8Z68-V Fan Header and Fan Control Questions - Page 3

post #21 of 34
I have no clue if cpu_fan & cpu_fan_opt work in tandem (though that would make a great deal of sense). Asus specifically states that only the cpu_fan and cha_fan1 are bios or qfan controlable. Also, the uefi bios only lists cpu and chassis fans qfan controllable. I only know that cha_fan1 & cha_fan2 are linked by my experimentation. I did read that it was thought by a few that the two cpu fans were present those cpu coolers that use 2 fans, an in fan and a out fan

As for duty cycle, thats fine. I simply explained what occurs during the duty cycle. It is still "preferred" for the several reasons I stated.

I still have no clue why Asus specifically labels the cpu fans pinouts as pwm yet the cha_fan1 is not (+5V instead of fanpwn)?

Good Luck
Jake
post #22 of 34
Thread Starter 
Quote:
Originally Posted by Jakejosh View Post

I have no clue if cpu_fan & cpu_fan_opt work in tandem (though that would make a great deal of sense). Asus specifically states that only the cpu_fan and cha_fan1 are bios or qfan controlable. Also, the uefi bios only lists cpu and chassis fans qfan controllable. I only know that cha_fan1 & cha_fan2 are linked by my experimentation. I did read that it was thought by a few that the two cpu fans were present those cpu coolers that use 2 fans, an in fan and a out fan
As for duty cycle, thats fine. I simply explained what occurs during the duty cycle. It is still "preferred" for the several reasons I stated.
I still have no clue why Asus specifically labels the cpu fans pinouts as pwm yet the cha_fan1 is not (+5V instead of fanpwn)?
Good Luck
Jake

Sir, actually I was not asking if the CPU_FAN and CPU_FAN_OPT PWM pins are working together (shorted). I was actually telling you that they are. This is already confirmed by many other users and myself because I already did my own experimentation on this. You will see that both headers are scaling at the same time if you monitor them.

That's it.
post #23 of 34
Well then, Thank You! Another piece of the ppuzzle. I apreciate it.

Jake
post #24 of 34
Thread Starter 
Quote:
Originally Posted by Jakejosh View Post

Well then, Thank You! Another piece of the ppuzzle. I apreciate it.
Jake

Glad to be of help! A Rep+1 would be appreciated smile.gif
post #25 of 34
Was there any final thoughts on this topic as to whether a 4-pin fan would be controllable were it to be attached to one of the pin headers on the mother board?

At the moment I have my two heatsink fans plugged into CHA_FAN 1 and 2 and they are controllable not issues there.
I have another fan plugged into CPU_FAN header via a PWM splitter, the splitter is four pin, the fan is only a three pin and this is not controllable.

What I'm having trouble understanding with this board is whether or not plugging a 4-pin fan into the CPU_FAN and CPU_FAN_OPT headers will allow for the speed to be controllable. The two PWR headers will run at full speed irrespective of the fan being plugged in, but the CPU headers are confusing me.
post #26 of 34
Thread Starter 
Quote:
Originally Posted by 5nak3 View Post

Was there any final thoughts on this topic as to whether a 4-pin fan would be controllable were it to be attached to one of the pin headers on the mother board?
At the moment I have my two heatsink fans plugged into CHA_FAN 1 and 2 and they are controllable not issues there.
I have another fan plugged into CPU_FAN header via a PWM splitter, the splitter is four pin, the fan is only a three pin and this is not controllable.
What I'm having trouble understanding with this board is whether or not plugging a 4-pin fan into the CPU_FAN and CPU_FAN_OPT headers will allow for the speed to be controllable. The two PWR headers will run at full speed irrespective of the fan being plugged in, but the CPU headers are confusing me.

As long as you plug a PWM fan in the CPU_FAN header, it will be automatically controllable based on your settings.
post #27 of 34
I don't know if CHA_FAN1 does PWM at all.

If I use a PWM splitter with a PWM fan and a 3-pin fan, they both end up being controlled with voltage. (Or else how would the header know that one fan is a 3-pin?)

BTW SpeedFan should read your GPU temp and control any detected fans on controllable headers with that temp.

Myself, I want to avoid the motherboard headers completely. Help me out?
Edited by samwiches - 4/11/12 at 8:36am
COMPUTER
(16 items)
 
  
CPUMotherboardGraphicsRAM
3570K Gigabyte GA-Z77X-UD3H Gigabyte GTX 670 Windforce OC 2GB Samsung 30nm 
Hard DriveHard DriveCoolingOS
WD Caviar Blue WD Caviar Black NZXT Havik 140 Windows 7 64bit 
OSMonitorKeyboardPower
Windows 8 64bit ASUS GD235HZ (GD245HQ) 120Hz Dell OCZ GameXStream 850W 
CaseMouseMouse PadAudio
Corsair Carbide 300R Logitech G9 naked Allsop Black Cloth (low profile) Logitech G35 Surround 
  hide details  
Reply
COMPUTER
(16 items)
 
  
CPUMotherboardGraphicsRAM
3570K Gigabyte GA-Z77X-UD3H Gigabyte GTX 670 Windforce OC 2GB Samsung 30nm 
Hard DriveHard DriveCoolingOS
WD Caviar Blue WD Caviar Black NZXT Havik 140 Windows 7 64bit 
OSMonitorKeyboardPower
Windows 8 64bit ASUS GD235HZ (GD245HQ) 120Hz Dell OCZ GameXStream 850W 
CaseMouseMouse PadAudio
Corsair Carbide 300R Logitech G9 naked Allsop Black Cloth (low profile) Logitech G35 Surround 
  hide details  
Reply
post #28 of 34
Thread Starter 
Quote:
Originally Posted by samwiches View Post

I don't know if CHA_FAN1 does PWM at all.
If I use a PWM splitter with a PWM fan and a 3-pin fan, they both end up being controlled with voltage. (Or else how would the header know that one fan is a 3-pin?)
BTW SpeedFan should read your GPU temp and control any detected fans on controllable headers with that temp.
Myself, I want to avoid the motherboard headers completely. Help me out?

CHA_FAN1 header is 4pin but the 4th pin is no a PWM control pin so you can only control fans connected to this header by voltage.
post #29 of 34
Yeah, this is bullshhhhh. Basically we get one PWM header on this board. frown.gif

At least you can run a 12v/PWM splitter and control unlimited fans with it.
COMPUTER
(16 items)
 
  
CPUMotherboardGraphicsRAM
3570K Gigabyte GA-Z77X-UD3H Gigabyte GTX 670 Windforce OC 2GB Samsung 30nm 
Hard DriveHard DriveCoolingOS
WD Caviar Blue WD Caviar Black NZXT Havik 140 Windows 7 64bit 
OSMonitorKeyboardPower
Windows 8 64bit ASUS GD235HZ (GD245HQ) 120Hz Dell OCZ GameXStream 850W 
CaseMouseMouse PadAudio
Corsair Carbide 300R Logitech G9 naked Allsop Black Cloth (low profile) Logitech G35 Surround 
  hide details  
Reply
COMPUTER
(16 items)
 
  
CPUMotherboardGraphicsRAM
3570K Gigabyte GA-Z77X-UD3H Gigabyte GTX 670 Windforce OC 2GB Samsung 30nm 
Hard DriveHard DriveCoolingOS
WD Caviar Blue WD Caviar Black NZXT Havik 140 Windows 7 64bit 
OSMonitorKeyboardPower
Windows 8 64bit ASUS GD235HZ (GD245HQ) 120Hz Dell OCZ GameXStream 850W 
CaseMouseMouse PadAudio
Corsair Carbide 300R Logitech G9 naked Allsop Black Cloth (low profile) Logitech G35 Surround 
  hide details  
Reply
post #30 of 34
Thread Starter 
Quote:
Originally Posted by samwiches View Post

Yeah, this is bullshhhhh. Basically we get one PWM header on this board. frown.gif
At least you can run a 12v/PWM splitter and control unlimited fans with it.

Technically, it is not "unlimited". The fan headers of this board are rated up to 1A capacity only. I wouldn't go diasy-chaining multiple fans in one header if it goes near 1A current draw.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel Motherboards
Overclock.net › Forums › Intel › Intel Motherboards › Asus P8Z68-V Fan Header and Fan Control Questions