Why are there 3 additional chassis fans listed in HWMonitor?

GiantMidget · 11 Feb 2021 at 11:21

Hi guys, I've just noticed that HWMonitor shows chassis fans 4,5 and 6. However, my motherboard only has 3 "chassis fans".

This is my mobo - link -> TUF GAMING X570-PLUS (WI-FI)
This is my CPU Cooler - link -> kraken x63

CHA_FAN 1 : upper rear 120mm fan
CHA_FAN 2 & 3 : 2 front PWM 140mm fans
CPU_FAN & AIO_PUMP: Kraken x63

I'm just wondering what could be causing this, as I'm trying to see why number 4 is running at a much higher RPM than the others. Ideally, I'd like to tell no. 4 & 5 to chill out a bit.

Anyone able to shed some light on this?

Cheers

Joxeon · 11 Feb 2021 at 11:51

Maybe #4 is the chipset fan although that still doesn't explain 5/6.

VortexA1 · 11 Feb 2021 at 13:50

The x63 is included in the chassis fans?

GiantMidget · 14 Feb 2021 at 21:24

VortexA1 said:
The x63 is included in the chassis fans?

I guess it could be, although the monitor it lists fans for the CPU, and the additional 3 chassis fans.

The x63 only has 2 fans as part of it, so it's strange that they all have their own RPM values

VortexA1 · 16 Feb 2021 at 02:04

Yeah mate.

you still reckoning it's what I said?

Rroff · 16 Feb 2021 at 02:14

HWMonitor has always been a bit glitchy detecting fans - it used to randomly find 1-2 fans doing silly speeds like 65,000 RPM awhile back.

Infact it is detecting a non-existent fan on my setup with a max speed of 337500 RPM LOL and value of 10-30K.

I think the problem is that motherboard manufacturers rarely work properly to standard for fans.

james.miller · 16 Feb 2021 at 03:27

The controller on that board supports 7 fans, cpu + 6 case fans, so it's likely that. I guess hwinfo either isnt or cant read the correct number of fans from the controller, only the maximum. If you know they're not connected, just ignore them

pc-guy · 16 Feb 2021 at 10:34

GiantMidget said:
Hi guys, I've just noticed that HWMonitor shows chassis fans 4,5 and 6. However, my motherboard only has 3 "chassis fans".

This is my mobo - link -> TUF GAMING X570-PLUS (WI-FI)
This is my CPU Cooler - link -> kraken x63

CHA_FAN 1 : upper rear 120mm fan
CHA_FAN 2 & 3 : 2 front PWM 140mm fans
CPU_FAN & AIO_PUMP: Kraken x63

I'm just wondering what could be causing this, as I'm trying to see why number 4 is running at a much higher RPM than the others. Ideally, I'd like to tell no. 4 & 5 to chill out a bit.

Anyone able to shed some light on this?

Cheers

It’s double up on the fan read outs.

if you look at the RPM they are exact replicate of the first set of fans.

ttaskmaster · 16 Feb 2021 at 11:05

ISTR it has something to do with Asus providing for additional fans via a (sold separately) Fan Extension Card - Without the FEC, the BIOS just read off existing fans so it didn't have a zero RPM report... or something like that?
I believe FanXpert had a similar quirk.

https://www.asus.com/uk/Motherboards-Components/Motherboards/Accessories/FAN-EXTENSION-CARD/

GiantMidget · 18 Feb 2021 at 11:48

Ahh okay, yeah makes sense that

Rroff said:
HWMonitor has always been a bit glitchy detecting fans - it used to randomly find 1-2 fans doing silly speeds like 65,000 RPM awhile back.

Infact it is detecting a non-existent fan on my setup with a max speed of 337500 RPM LOL and value of 10-30K.

I think the problem is that motherboard manufacturers rarely work properly to standard for fans.

Wow haha, yeah makes sense, seems like it's a combination of the mobo and hwmonitor doing their best to be helpful.

Cheers for the help guys.