Jump to content
Search In
  • More options...
Find results that contain...
Find results in...

How to Test In Real-Time Different CPU Fan Speeds?

Hi,

 

I want to test CPU fan in different speeds in real-time. Does not have to be RPM, can be also in percentage like 10%, 20%, 30% etc.

 

Anyone knows of a software that allows this?

Link to post
Share on other sites
59 minutes ago, emosun said:

a lab power supply would be best if you need to test the fan at any voltage or speed

Either this or an Arduino providing a PWM signal.

Main: AMD Ryzen 7 1700X, Nvidia GTX 780, 16 GB 2667 MT/s DDR4 Fedora 33 x86_64

Secondary: Intel Xeon X5670, Nvidia GTX 660, 24 GB 1333 MT/s DDR3 Windows 10 Home x86_64

Server: Intel Xeon X5670, 60 GB 1333 MT/s DDR3-R Ubuntu Server 20.04.1 LTS x86_64

Laptop: Intel Core i5-3320M, 16 GB 1600 MT/s DDR3 Fedora 33 x86_64

Link to post
Share on other sites

Or if you mean inside computer, using fan controller software or oldschool DC fan controller is also good.

^^^^ That's my post ^^^^
<-- This is me --- That's your scrollbar -->
vvvv Who's there? vvvv

Link to post
Share on other sites
15 minutes ago, TechnicGeek said:

@LogicalDrm I mean CPU fan.

That doesn't clarify it. CPU fan is same as any case fan. So are you testing just fan, or whole CPU cooler performance etc.?

^^^^ That's my post ^^^^
<-- This is me --- That's your scrollbar -->
vvvv Who's there? vvvv

Link to post
Share on other sites
On 10/14/2020 at 10:43 PM, LogicalDrm said:

That doesn't clarify it. CPU fan is same as any case fan. So are you testing just fan, or whole CPU cooler performance etc.?

I am testing only CPU fan.

 

Ryzen 3600X stock fan has a maximum RPM of 3000.

My SYS_FAN has a maximum RPM of 1243.

 

That's what System Information Viewer shows me so CPU fan and SYS_FAN

are not the same when it comes to maximum RPM.

Link to post
Share on other sites
20 minutes ago, TechnicGeek said:

I am testing only CPU fan.

 

Ryzen 3600X stock fan has a maximum RPM of 3000.

My SYS_FAN has a maximum RPM of 1243.

 

That's what System Information Viewer shows me so CPU fan and SYS_FAN

are not the same when it comes to maximum RPM.

While inside the PC would then be the answer.

 

You can use software, mainly FanControl or Argus Monitor to set certain percentage to each header. But I don't think you will find out anything you don't already know. Fan control, when done in software and not directly (hardware fan controllers and external solutions), only uses percentage of full speed. This is easier way to do it since fans are different, have different max rpm and within same model even some differences with how fast they actually will spin. So you can't do rpm or even voltage based controls with software.

 

Even knob-control for 3pin fans is more based on percentage, while it controls voltage given to fan. PWM controls rely on controller telling fan how many pulses it gets.

^^^^ That's my post ^^^^
<-- This is me --- That's your scrollbar -->
vvvv Who's there? vvvv

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×