CPU/Mobo Hyper6+ and PWM connector!

Status
Not open for further replies.
K

KiD0M4N

Forerunner
Hi,

I was going through the data sheet and stumbled upon this:

You could also connect the PWM 4-pin connector to the general 3-pin mainboard. If your mainboard supports PWM 4-pin connector, Hyper 6+ will control the fan speed through PWM function of the mainboard; if your mainboard supports general 3-pin connector, the Hyper 6+ will run the lowest fan speed.
Click to expand...

This means I have been running the CM h6+ underpowered all this time.

Can anyone tell me if the Ultra-D has the 4 pin fan connectors or if it is possible to mod the connector so that I run the Hyper6+ fan at full speed.

So basically, what do i connect to the 4th unused pin.

Regards,

Karan
 
You dont connect anything to 4th pin.

Intel tried to push this 4 pin PWM connector but not many use this design.

Shuttle PCs and some intel mobos have this connector.

Today motherboard like DFI allow you to control the fan speeds using softwares like ITE smart guardian. And there are many 3rd party apps for mobos that do the same even with 3 pin connector fans.

4 Pin PWM fans use the 4th pin to control their speed. They are abckword compatiable. That means they can run on 3 pin connector. Depending on manufacturer they either run at max or min speed.

in this case its running at min speed. Are you using the fan controller that came with it? i think you should be able to increase/decrease fan RPM with that.

EDIT: This is a schamatic for one such fan. Have a look if you are interested ;)

http://www.jmcproducts.com/products/dc_fans/pdf/92x92x25_12H_PWM.pdf
 
I have the CM Hyper 48 which came with a fan with a 4 pin connector - (I have not used this HSF till now) - I understand this has the same fan speed problem you mentioned = will run at lowest speed when connected to a 3 pin header on MoBo. I searched thru the CM forum and came across this mod which will force the fan to run at full speed. If you try it do let us know how it worked out :)

THE MOD: The pins shown connected with a grey colour line have to be connected together - the suggestion was to use a wire or bent pin.

Hyper48SpeedMod.jpg
 
  • Like
Reactions: 1 person
I think that fan controller does not come with hyper6+ or hyper48. Also i have read in many reviews that the processer does not get that much hot to have PWM regulation to kick in when using hyper48 or hyper6+. So according to you is it true. I am planning to buy hyper48 for intel 2.8E and amd 3000+ processer. So would it be safe to run the fan at low speed?
 
Eazy said:
I have the CM Hyper 48 which came with a fan with a 4 pin connector - (I have not used this HSF till now) - I understand this has the same fan speed problem you mentioned = will run at lowest speed when connected to a 3 pin header on MoBo. I searched thru the CM forum and came across this mod which will force the fan to run at full speed. If you try it do let us know how it worked out :)

THE MOD: The pins shown connected with a grey colour line have to be connected together - the suggestion was to use a wire or bent pin.

Hyper48SpeedMod.jpg
Click to expand...

ahha, exactly what i told to sunny and funky........ :D :D :D

basically it simulates a 100% duty cycle, rock on!
 
man, imagine i almost fell for sunny's $10 offer ! :bleh: :bleh:

from cooler master site itself.........

Q: My cooler is used 4 PIN PWM fan, but my motherboard is not compatible with 4 PIN PWM function. Therefore, the PWM fan is working on the lowest speed. Do you have any solution to increase the speed of PWM fan?
A:
You can find an extra wire and connect the 12V plus pin and PWM pin. Then PWM fan will work on the fastest speed.
The PIN function of PWM fan is:
P1 / Black color > Ground pin
P2 / Yellow color > Voltage Plus pin (12V)
P3 / Green color > Tachometer pin
P4 / Blue color > PWM pin
Note: It is possible the color of wires is different from ours, because it is set by manufacturer.

pwm_p1.jpg
Click to expand...

74 CFM powa!

Source: http://www.coolermaster.com/index.php?LT=english&Language_s=2&url_place=faq&ftype=&xs=5&serial=136
 
^ BTW, doesnt this mean the fan will run at full speed all the time? i.e. you wont be able to vary fan speeds.
 
@Crazy_Eddy, i may be wrong (since i have not seen the schematic of the actual fan electronic circuit)but the fan wont be running at full speed all the time.;) Think ...
the "+" voltage which is jumpered to the "pwm" in that 4 pin connector, what voltage it would be having ??

hint : that "+" voltage is controlled by the m/b bios, depending upon the feedback from the "rpm" signal. that is how the fan speed is regulated in a normal three pin fan header.

only if the "pwm' and / or the "+' wire of the 4 pin connector is connected directly to the 12V from the psu will the fan run at its maximum speed. other wise the speed will be controlled by the m/b bios as in normal m/b's.
 
Last edited by a moderator:
deejay said:
@Crazy_Eddy, i may be wrong (since i have not seen the schematic of the actual fan electronic circuit)but the fan wont be running at full speed all the time.;) Think ...
the "+" voltage which is jumpered to the "pwm" in that 4 pin connector, what voltage it would be having ??

hint : that "+" voltage is controlled by the m/b bios, depending upon the feedback from the "rpm" signal. that is how the fan speed is regulated in a normal three pin fan header.

only if the "pwm' and / or the "+' wire of the 4 pin connector is connected directly to the 12V from the psu will the fan run at its maximum speed. other wise the speed will be controlled by the m/b bios as in normal m/b's.
Click to expand...

@deejay:

sir, when the 4pin connector is connected to the 3pin header on the MB, it runs at the lowest RPM at default. so the software can only lower it further (using linear motor control.)

by giving a constant voltage to the PWM pin, we are creating a 100% duty cycle and it will run at full rpm all the time. ofcourse, if we try and control the fan speed using DFI smartguardian, we will be giving it lesser volts which will reduce the torque somewhat....... so the wise choice would be to set it at full speed. its only 38 dB at full POWA!
 
Last edited by a moderator:
goldenfrag said:
Yea, so whats wrong in that?
Cmon, noise freaks here? I think there are too many noise freaks :@
Click to expand...
Not that GF....but won't it reduce the fans life?? running @ full steam all the time?
 
Status
Not open for further replies.
Top Bottom