Question Fan Speeds Capped Below Max RPM?

[tvo941]

Spent hours trying to figure out why my fans cannot be configured to reach their max RPMs. It gets extremely frustrating after long gaming sessions my CPU will be at a steady 90+ degree instead of my fans ramping up to cool it down.

https://imgur.com/a/FVpVrTh

Here are my specs:

ASUS ROG Strix B650-A Gaming WiFi 6E AM5
SilverStone Technology SX1000 Platinum, 80 Plus Platinum 1000W Fully Modular SFX-L Power Supply
Ryzen 7 9800XD
Corsair iCUE H150i Elite LCD XT Liquid CPU Cooler 360mm AIO
Corsair Internal 4-Port USB 2.0 Hub
CORSAIR iCUE COMMANDER CORE XT,
4x Corsair QL Series, iCUE QL120 RGB, (1500 max RPM)
2x Corsair QL Series, iCUE QL140 RGB (1250 max RPM)
3x Corsair LL Series, LL120 RGB (2200 max RPM)

First, I don't even know why all the fans aren't showing up. I have 9 fans in my computer, only 5 are showing up here. Seems like there's four fans running at the right speed, 1 at the wrong speed (#4), and 4 fans that are missing. All my fans are plugged into Corsair's Commander Core and I think a second one Commander Core (or something similar to it that came with the fans like the lightning node pro module or something) .

I remember seeing another forum post with a similar problem where the iCUE software's fan configurations was set to custom and using the coolant temperature as the sensor would fix it. I tried that and it didn't work for me. Can someone please give me some insight as to how to fix this? I am contemplating on taking this to a PC repair shop because it's driving me nuts.

 

[Lutfij]

Welcome to the forums, newcomer!

What version of Corsair's iCUE are you working with? If you look at the fan's specification's page;
https://www.corsair.com/us/en/p/cas...hhgl5geYacOI_MFysQFfy0uHZCCb_Zf#tab-techspecs
you'll see mention of the max RPM being stated as 1500 +/- 10%.

If you're not referring to the QL fans in your build, please pass on an image of how the fans are hooked up to the controller(s) in your build.

 

[tvo941]

Hi Lutfij, and thank you. I've always seen the kindest and most helpful responses on these forums so I figured I'd come here for assistance.

I am referring to the LL fans. There should be two more that can run at 2200 RPM but it's either not showing up or it's the #4 fan that isn't running correctly. Here is the iCUE version.

https://imgur.com/a/M04F2VO

As for the hook ups... I'd have to take the computer apart again tomorrow to show that. And also, I don't have the slightest clue on how'd I would track which cable is going where without pulling them apart (they're all bundled together and tied down by zip ties). One of the most aggravating parts of computer building for me was organizing the RGB and fan cables in my computer (011 dynamic mini).

 

[CountMike]

Hi Lutfij, and thank you. I've always seen the kindest and most helpful responses on these forums so I figured I'd come here for assistance.

I am referring to the LL fans. There should be two more that can run at 2200 RPM but it's either not showing up or it's the #4 fan that isn't running correctly. Here is the iCUE version.

https://imgur.com/a/M04F2VO

As for the hook ups... I'd have to take the computer apart again tomorrow to show that. And also, I don't have the slightest clue on how'd I would track which cable is going where without pulling them apart (they're all bundled together and tied down by zip ties). One of the most aggravating parts of computer building for me was organizing the RGB and fan cables in my computer (011 dynamic mini).

What and how do you see fans in BIOS ? Software ,may not be as reliable.
In BIOS, probably under Sensors section you should see all fans and in settings you can adjust their speed curves and behavior. Make sure fan headers are set to fan types, usually along with Auto you can set their mode of operation and control, There are 2 types, 3pin/wire are controlled by voltage variation and 4pin/wire are controlled by PWM (Pulse Width Modulation ) which controls speed by varying length of 12v pulses to motor. Although most PWM type fans can also be controlled by varying voltages, WRM type control is more accurate.
So to test fans actual speed. (+/- 10% tolerance is common), disable any software control, set them in BIOS to 100% and note their RPM. that will tell you what their actual performance should be.

 

[tvo941]

What and how do you see fans in BIOS ? Software ,may not be as reliable.
In BIOS, probably under Sensors section you should see all fans and in settings you can adjust their speed curves and behavior. Make sure fan headers are set to fan types, usually along with Auto you can set their mode of operation and control, There are 2 types, 3pin/wire are controlled by voltage variation and 4pin/wire are controlled by PWM (Pulse Width Modulation ) which controls speed by varying length of 12v pulses to motor. Although most PWM type fans can also be controlled by varying voltages, WRM type control is more accurate.
So to test fans actual speed. (+/- 10% tolerance is common), disable any software control, set them in BIOS to 100% and note their RPM. that will tell you what their actual performance should be.

Funny enough, I've checked my BIOS multiple times with the most recent being today and it only shows two fans working. They're both set to auto and full speed. I think it's because they're all hooked up to Corsair things. Should I still try uninstalling iCUE tomorrow? That's the only software I have that controls my fans.

 

[dwd999]

You could try a 3rd party program like FanControl and see how many fans that shows. I'm guessing that the way your system is set up now only the 2 fan hubs will show. But you could see if FanControl will give you manual control of your hubs and if you can use it to set the fans to 100 percent. Its always worked great for me when testing my fans that way.

Fan Control - A highly focused fan controlling software for Windows

Fan Control is a free software that allows the user to control their CPU, GPU and case fans using temperatures.

getfancontrol.com

 

[Paperdoc]

First, the web page for Corsair LL120 RGB fans

https://www.corsair.com/ca/en/p/cas...TfgqW426OiJennYdRyLgntJcSgx1m9T#tab-techspecs

says their max speed is 1500 RPM, not 2200.

Next, on a MOBO, each fan header can deal with the speed signal returned to it from only ONE fan, so any Hub or Splitter will only send to its host header the speed of only one of its fans. You will never "see" the speeds of "other" fans on that Splitter or Hub anywhere. Further, the ONLY output port of the Hub that can report a fan speed to the host is marked in some way and you MUST have one fan plugged into that port. On each Corsair unit I expect that is No 1. I am not positive about the Hubs that Corsair supplies and associated software (iCUE) but I expect they do the same. So for each GROUP of fans attached to one Hub unit you can expect to see only ONE fan's speed. You are supposed to assume the "others" in each group are doing the same as the only one reported as long as they are the same model.

Since all of your case vent fans are connected via Corsair hardware units, you can use iCUE to view all the info that they have available.

 

[CountMike]

Funny enough, I've checked my BIOS multiple times with the most recent being today and it only shows two fans working. They're both set to auto and full speed. I think it's because they're all hooked up to Corsair things. Should I still try uninstalling iCUE tomorrow? That's the only software I have that controls my fans.

If several fans are connected to same hub, you will see only one-

 

[tvo941]

First, the web page for Corsair LL120 RGB fans

https://www.corsair.com/ca/en/p/cas...TfgqW426OiJennYdRyLgntJcSgx1m9T#tab-techspecs

says their max speed is 1500 RPM, not 2200.

Next, on a MOBO, each fan header can deal with the speed signal returned to it from only ONE fan, so any Hub or Splitter will only send to its host header the speed of only one of its fans. You will never "see" the speeds of "other" fans on that Splitter or Hub anywhere. Further, the ONLY output port of the Hub that can report a fan speed to the host is marked in some way and you MUST have one fan plugged into that port. On each Corsair unit I expect that is No 1. I am not positive about the Hubs that Corsair supplies and associated software (iCUE) but I expect they do the same. So for each GROUP of fans attached to one Hub unit you can expect to see only ONE fan's speed. You are supposed to assume the "others" in each group are doing the same as the only one reported as long as they are the same model.

Since all of your case vent fans are connected via Corsair hardware units, you can use iCUE to view all the info that they have available.

Odd. On the amazon page where I ordered it from it shows the max RPM as 2200:

https://imgur.com/a/SmmMYXs

Different model maybe? One of my fans is hitting that 2200 so I assume it's accurate.

As shown in my original post, for some reason all the fans are not showing in iCUE. 9 fans, but 4 are missing. I am going to take apart my computer now and start snapping photos of the hookups to see if that sheds more light onto this issue.

 

[tvo941]

If several fans are connected to same hub, you will see only one-

Does that mean fiddling around with BIOS won't do anything then?

 

[tvo941]

Welcome to the forums, newcomer!

What version of Corsair's iCUE are you working with? If you look at the fan's specification's page;
https://www.corsair.com/us/en/p/case-fans/co-9050098-ww/icue-ql120-rgb-120mm-pwm-triple-fan-with-lighting-node-core-co-9050098-ww?srsltid=AfmBOorPR-8iVsDq9p0hrtsYqhhgl5geYacOI_MFysQFfy0uHZCCb_Zf#tab-techspecs
you'll see mention of the max RPM being stated as 1500 +/- 10%.

If you're not referring to the QL fans in your build, please pass on an image of how the fans are hooked up to the controller(s) in your build.

I can't believe it. I've managed to fix it.

https://imgur.com/4nUpF6L

What I did was move all the LL fans to the Commander Core that is hooked up to the AIO andI moved all the QL fans to the second Commander Core. For some reason, iCUE is only recognizing the fans on the first Commander Core hooked up to the AIO., and not the other. So not sure how to fix that.

And of course, I can't catch a break because it caused another problem. This issue was here before, but it seems to have 4x folded after moving my cables around.

https://imgur.com/a/ReqJIZB

Not all the RGB on the fans are lighting up. The first Commander Core is on a SATA cable with 3 other devices (SSD drive, 2nd Commander Core, Lian Li Strimer). Seems like its a power delivery issue?