Overclock.net › Forums › Cooling › Air Cooling › CRYORIG Fan & Cooler Club; R1 Ult, R1 Uni, C1, H5, XF140 & XT140 and all things Cryorig
New Posts  All Forums:Forum Nav:

CRYORIG Fan & Cooler Club; R1 Ult, R1 Uni, C1, H5, XF140 & XT140 and all things Cryorig - Page 282

post #2811 of 3698
Quote:
Originally Posted by doyll View Post

Hardware is needed. Something like a VOM (Volt-Ohm-Meter)

When fans are PWM the voltage never changes. The power to the fan is always12v. The PWM (pulse width modulation) pulses the 12v power to regulate the amount of time the fan motor receives 12v of power. If 12v power is constant the fan runs full speed. The less time the fan motor receives 12v power the slower the fan motor runs.

Oh i see.
So the fan is receiving 12 all the time, and the chip on the fan regulates the speed right?
But the motherboard is always "sending" 12v.

In this case, is there any way to measure that 12v signal in the motherboard connector?

Thank you again smile.gif
post #2812 of 3698
Quote:
Originally Posted by Alover View Post

Oh i see.
So the fan is receiving 12 all the time, and the chip on the fan regulates the speed right?
But the motherboard is always "sending" 12v.

In this case, is there any way to measure that 12v signal in the motherboard connector?

Thank you again smile.gif

Yes. Use a voltmeter. Except the 12V line isn't a signal - it's just 12V, +/- a few millivolts. Pin 4 is the PWM pulse signal.

PWM Pinout
1 GND | black
2 +12V | yellow
3 RPM | green
4 PWM | blue

To measure the PWM period and duty cycle usually requires a scope. Or not. Can DIY a FFT system on the cheap
post #2813 of 3698
Quote:
Originally Posted by MicroCat View Post

Yes. Use a voltmeter. Except the 12V line isn't a signal - it's just 12V, +/- a few millivolts. Pin 4 is the PWM pulse signal.

PWM Pinout
1 GND | black
2 +12V | yellow
3 RPM | green
4 PWM | blue

To measure the PWM period and duty cycle usually requires a scope. Or not. Can DIY a FFT system on the cheap

Thank you!.
I want to know if the mobo is ok.
Maybe a wrong v is causing that "high rpm curve".
Thats why im disapointed with the cryorig ( from the other post xd).

Or maybe i should accept that this is the average curve for that "noisy" fan mad.gif

Thank you.!
post #2814 of 3698
What is the mobo? And what are the fan control settings in the bios?
post #2815 of 3698
Quote:
Originally Posted by MicroCat View Post

What is the mobo? And what are the fan control settings in the bios?

asus z170 pro gaming.
In the bios i only found 4 "profiles".
Yo can customize the temp/pwm ratiobut the pwm/rpm is always that bad xd.
I mean, you can say, at 50ºC-50pwm and at 60ºC-60pwm, but considering between 50 and 60 pwm there is a big rpm difference this is not helpfull D:

Thanks!
post #2816 of 3698
ASUS generally have the best PWM implementations. Even if you set it to 10% at 30c on the low end, the XF140 has a min speed of 700rpm (+/- 10%). It may not bother most, but 700rpm can be too audible for some, like me.

The XF140 is not the smoothest sounding fan at any speed. And can exhibit a subtle chuffing sound at low speed. Combined with the 'plateaued' pwm response curve, it's not among my fav 140mm fans. See the XF140 fan response curve from Thermalbench's R1 test here.
post #2817 of 3698
Quote:
Originally Posted by MicroCat View Post

ASUS generally have the best PWM implementations. Even if you set it to 10% at 30c on the low end, the XF140 has a min speed of 700rpm (+/- 10%). It may not bother most, but 700rpm can be too audible for some, like me.

The XF140 is not the smoothest sounding fan at any speed. And can exhibit a subtle chuffing sound at low speed. Combined with the 'plateaued' pwm response curve, it's not among my fav 140mm fans. See the XF140 fan response curve from Thermalbench's R1 test here.

Thats exactly what worries me.
Considering the curve in the thermalbenchs review i can make some weird comparissons.

the fan stars going faster at 20%, mines at 800 rpm at 20% :S
At 40% is still around 800rpm. Mines at 40% runs at 1055 rpm!!!
Its somethin crazzy!!!

I post again my screen for you.


And then i make a talbe with the review data.

10 20 30 40 50 60 70 80 90 100
700 700 740 810 960 1180 1200 1300 1300 1300

As you can see, if the thermalbench review is ok, my fans behaviour is kinda weird :S

I dont really know whats happening.
post #2818 of 3698
Quote:
Originally Posted by Alover View Post

Thats exactly what worries me.
Considering the curve in the thermalbenchs review i can make some weird comparissons.

the fan stars going faster at 20%, mines at 800 rpm at 20% :S
At 40% is still around 800rpm. Mines at 40% runs at 1055 rpm!!!
Its somethin crazzy!!!

I post again my screen for you.


And then i make a talbe with the review data.

10 20 30 40 50 60 70 80 90 100
700 700 740 810 960 1180 1200 1300 1300 1300

As you can see, if the thermalbench review is ok, my fans behaviour is kinda weird :S

I dont really know whats happening.

Your pwm follows the basic response of the curve at thermalbench, but with a +10% offset between 50% to 80%. Not that much outside of spec, all variables included. Thermalbench uses an Aquaero for testing vs Asus pwm control. With some tweaking in the bios fan control you could get closer

However, even if your fan matched the thermalbench curve perfectly, it would still spin faster at idle than I'd be comfortable with. Sub 500rpm is my idle threshold for 140mm pwm fans.Unless it's an exceptionally quiet fan, which the XF140 isn't.
post #2819 of 3698
Quote:
Originally Posted by Alover View Post

Thats exactly what worries me.
Considering the curve in the thermalbenchs review i can make some weird comparissons.

the fan stars going faster at 20%, mines at 800 rpm at 20% :S
At 40% is still around 800rpm. Mines at 40% runs at 1055 rpm!!!
Its somethin crazzy!!!

I post again my screen for you.


And then i make a talbe with the review data.

10 20 30 40 50 60 70 80 90 100
700 700 740 810 960 1180 1200 1300 1300 1300

As you can see, if the thermalbench review is ok, my fans behaviour is kinda weird :S

I dont really know whats happening.

Have you run tuning in FanXpert?
post #2820 of 3698
Thread Starter 
Quote:
Originally Posted by Alover View Post

Thats exactly what worries me.
Considering the curve in the thermalbenchs review i can make some weird comparissons.

the fan stars going faster at 20%, mines at 800 rpm at 20% :S
At 40% is still around 800rpm. Mines at 40% runs at 1055 rpm!!!
Its somethin crazzy!!!

I post again my screen for you.


And then i make a talbe with the review data.

10 20 30 40 50 60 70 80 90 100
700 700 740 810 960 1180 1200 1300 1300 1300

As you can see, if the thermalbench review is ok, my fans behaviour is kinda weird :S

I dont really know whats happening.
What is happening is you are freaking out over normal fan performance. The XF140 is what it is. Your XF140 rpm is within factory specifications .. Just like MicroCat and I have said.
Here are graphs with rpm range expanded so we can see both SF fan lines.

Your PWM % to RPM is near identical to the my graph you posted before.
Like MicroCat said, it is also within the 10% margin of error in specifications.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Air Cooling
Overclock.net › Forums › Cooling › Air Cooling › CRYORIG Fan & Cooler Club; R1 Ult, R1 Uni, C1, H5, XF140 & XT140 and all things Cryorig