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Case fan running at full speed

TFizz18
By TFizz18
in CPUs, Motherboards, and Memory
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I have two intake case fans and while one runs normally, the other one is constantly at max speed. I believe this is because one fan is plugged into a three pin port and the other is plugged into a four pin (see the attached photo). If this is whats happening, can I just get a splitter for the 4 pin port and then plug both fans into it?

Capture+_2022-01-09-10-55-23.png

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28 minutes ago, TFizz18 said:

get a splitter for the 4 pin port and then plug both fans into it?

You can do this, yes. 
 

But, you can also go into the BIOS and set the 3 pin fan curve to not just be 100%. It may be in performance mode or something in the bios, but you should be able to slow it down. 

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1 hour ago, LIGISTX said:

You can do this, yes. 
 

But, you can also go into the BIOS and set the 3 pin fan curve to not just be 100%. It may be in performance mode or something in the bios, but you should be able to slow it down. 

The chassis 2 case fan does not appear as an option in bios. Only the chassis 1 case fan appears, and that one is running at normal speeds.

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7 hours ago, TFizz18 said:

The chassis 2 case fan does not appear as an option in bios. Only the chassis 1 case fan appears, and that one is running at normal speeds.

Hmm, I suppose you can just get a fan splitter then. Is Chassis 2 fan labeled as "PWR FAN"? If so, that will only run at 12v all the time and wouldn't be in BIOS, which would explain why that is.

Rig: i7 13700k - - Asus Z790-P Wifi - - RTX 4080 - - 4x16GB 6000MHz - - Samsung 990 Pro 2TB NVMe Boot + Main Programs - - Assorted SATA SSD's for Photo Work - - Corsair RM850x - - Sound BlasterX EA-5 - - Corsair XC8 JTC Edition - - Corsair GPU Full Cover GPU Block - - XT45 X-Flow 420 + UT60 280 rads - - EK XRES RGB PWM - - Fractal Define S2 - - Acer Predator X34 -- Logitech G502 - - Logitech G710+ - - Logitech Z5500 - - LTT Deskpad

 

Headphones/amp/dac: Schiit Lyr 3 - - Fostex TR-X00 - - Sennheiser HD 6xx

 

Homelab/ Media Server: Proxmox VE host - - 512 NVMe Samsung 980 RAID Z1 for VM's/Proxmox boot - - Xeon e5 2660 V4- - Supermicro X10SRF-i - - 128 GB ECC 2133 - - 10x4 TB WD Red RAID Z2 - - Corsair 750D - - Corsair RM650i - - Dell H310 6Gbps SAS HBA - - Intel RES2SC240 SAS Expander - - TreuNAS + many other VM’s

 

iPhone 14 Pro - 2018 MacBook Air

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