Question CPU FAN HEADER
- Thread starter anjris
- Start date
geofelt
Titan
- Oct 9, 2006
- 54,269
- 4,130
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Use a fan splitter and connect both to the cpu fan header.
A splitter for a cpu fan will have the speed sensor of the second fan disabled to avoid speed sensing conflicts.
You can do this cutting yourself if you need to.
As an alternative, connect the second fan anywhere you can but it will not be managed by the cpu fan profile.
A splitter for a cpu fan will have the speed sensor of the second fan disabled to avoid speed sensing conflicts.
You can do this cutting yourself if you need to.
As an alternative, connect the second fan anywhere you can but it will not be managed by the cpu fan profile.
digitalgriffin
Splendid
- Jan 29, 2008
- 3,540
- 1,482
- 25,390
Connect it to PUMP_FAN1. Alternatively you can get a 4 pin splitter and use that on one header.
I have installed Noctua NH-U14 S Cpu cooler with 2 fans.
And already tried to use the Y splitter cable. With that cable both fans are spinning. But those fans not showing the RPM under MSI BIOS and even in MSI Dragon centre under hardware monitor. It was showing zero.
And when i will remove one fan. It showing the RPM of one FAN on both places i.e. Bios and MSI dragon centre.
Why it is like that?
Hi,
I am using Y splitter cable to run the 2 CPU fan on CPU heat sink in Push-pull model.
So i have connected both the FAN's on CPU FAN header via Y splitter cable.
But my concern is none of the CPU fan is not showing the CPU FAN RPM under BIOS and even MSI Dragon centre under hardware monitor.
I am using MSI Z390 A PRO motherboard and when i will disconnect the one FAN from y splitter cable. then one FAN is started showing the CPU FAN RPO under BIOS.
Not sure what to do to resolve this issue.
I am using Y splitter cable to run the 2 CPU fan on CPU heat sink in Push-pull model.
So i have connected both the FAN's on CPU FAN header via Y splitter cable.
But my concern is none of the CPU fan is not showing the CPU FAN RPM under BIOS and even MSI Dragon centre under hardware monitor.
I am using MSI Z390 A PRO motherboard and when i will disconnect the one FAN from y splitter cable. then one FAN is started showing the CPU FAN RPO under BIOS.
Not sure what to do to resolve this issue.
I am using the PWM Y splitter cable. its not normal splitter. its a PWM Y splitter.
And my Water pump header is empty. but i heard in other forums that if you connect any Fan on Water pump header. it will always run on full speed? is that true?
And on Which temperature source the water pump header will work (CPU or motherboard temp)?
- Jul 7, 2008
- 20,664
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I meant the voltage through the pwm y split might not be enough for two fans. Or two fans is confusing the monitoring mechanism.
Should be able to adjust fan rpm if use pump header.
linustechtips.com
Should be able to adjust fan rpm if use pump header.
Can i plug in a system fan into a pump header?
Hello. My question is pretty much what the title states. I don't want to run an extension or even try to run across the board to the next available system fan header, so I am wondering if I can plug my regular system fan into a pump header. Thank you in advance for your help!
linustechtips.com
I meant the voltage through the pwm y split might not be enough for two fans. Or two fans is confusing the monitoring mechanism.
Should be able to adjust fan rpm if use pump header.
Can i plug in a system fan into a pump header?
Hello. My question is pretty much what the title states. I don't want to run an extension or even try to run across the board to the next available system fan header, so I am wondering if I can plug my regular system fan into a pump header. Thank you in advance for your help!
I meant the voltage through the pwm y split might not be enough for two fans. Or two fans is confusing the monitoring mechanism.
Should be able to adjust fan rpm if use pump header.
Can i plug in a system fan into a pump header?
Hello. My question is pretty much what the title states. I don't want to run an extension or even try to run across the board to the next available system fan header, so I am wondering if I can plug my regular system fan into a pump header. Thank you in advance for your help!
Sure, i will connect the another CPU fan in water pump header. Will it read it CPU temp or system temp?
- Jul 7, 2008
- 20,664
- 2,200
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Cpu temp is standalone temp, the fans won't tell the system what temp the cpu is at, they only read rpm speed.
When the fan header is connected the motherboard knows the cpu is being cooled. The cpu temperature is read internally of the processor.
When the fan header is connected the motherboard knows the cpu is being cooled. The cpu temperature is read internally of the processor.
Do you mean SYS_FAN header on Motherboard won't work on CPU temp. they will work on Motherboard Temp?
No i don't want control over RPM speed. My question is if i will connect my second fan to SYS_FAN HEADER.
On which temp sensor it will detect and do the RPM speed less or more on which temp source?
No,
I have connected 4 Fans in SYS_FAN Header but they are not running at full speed. they will regulate the RPM.
But i am not sure by which temp sensor they will regulate the RPM? And i guess in this world no one has an idea?
As we know CPU fan header will regulate the RPM based on CPU temp high or low. But not sure about SYS_FAN header ?
If Sys fan has no temp sensor. How the case fans will get regulate the RPM SPEED. THEY WON'T RUN AT FULL SPEED AT ALL THE TIMES.
they will regulate but not sure on what basis?
- Jul 7, 2008
- 20,664
- 2,200
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Case fans can be controlled by manual winder or if the option is there to increase or decrease rpm via software via motherboard then YOU have to do the regulating, the sys_fan headers aren't sensing anything. There is no sensor to tell the fans what temperature it is inside the case.
Getting off topic here.
The cpu_fan and pump header is controlled by the cpu's temp sensor. It's been suggested here multiple times already.
Getting off topic here.
The cpu_fan and pump header is controlled by the cpu's temp sensor. It's been suggested here multiple times already.
No, I am not mistaken. I am talking about case fans, which is 3 intake fans in front of the chassis, 2 top exhaust fans and 1 rear exhaust fan.
Thank you
Actually my thread was about where to connect second cpu cooler fan in motherboard as my Mobo has only 1 CPU fan header.
And you have suggested to use the Water pump header in that case.
Thank you
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