Jump to content

PWM Fan Splitter Question

UgleeDuck
By UgleeDuck
in Cooling
 Share
Go to solution Solved by IkeaGnome,

The reason for the 3 pin females is so that you don't have 3 fans trying to report speed to the same header on the motherboard, giving bad numbers. The missing wire and pin is the RPM speed signal. 

noctua_pin_configuration_5v_fans.png.3bdff0520d5f28d901fdb0845e51f8ff.png

It does not matter which one is plugged into the 4 pin female.

Yes 4 pin fans are PWM.

Yes PWM splitters will let more than one PWM fan be controlled. You can even use a set of regular 3 pin fans in a 4 pin header as long as they are ALL 3 pin and the header is in DC mode and not PWM. 

Posted

Sorry if this has been answered, but...

  1. PWM cables are 4 pin, correct?
  2. PWM splitter cables allow more than one PWM fan to be controlled by one fan header on the MB, correct?
  3. I noticed that PWM splitter cables (i.e. This One) has 3 female plugs to accept 3 fans to use on one MB header. However 2 of the 3 female connections only have 3 pins. 1 of the female connection has 4 pins and the male connection looks to have 4 pins. Why the 2 3 pin female connections?
  4. Does it matter which of the 3 fans is plugged into the 4 pin female?

Sorry for the noob builder question. Thanks.

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
  • Solution

The reason for the 3 pin females is so that you don't have 3 fans trying to report speed to the same header on the motherboard, giving bad numbers. The missing wire and pin is the RPM speed signal. 

noctua_pin_configuration_5v_fans.png.3bdff0520d5f28d901fdb0845e51f8ff.png

It does not matter which one is plugged into the 4 pin female.

Yes 4 pin fans are PWM.

Yes PWM splitters will let more than one PWM fan be controlled. You can even use a set of regular 3 pin fans in a 4 pin header as long as they are ALL 3 pin and the header is in DC mode and not PWM. 

I'm not actually trying to be as grumpy as it seems.

I will find your mentions of Ikea or Gnome and I will /s post. 

Project Hot Box

CPU 13900k, Motherboard Gigabyte Aorus Elite AX, RAM CORSAIR Vengeance 4x16gb 5200 MHZ, GPU Zotac RTX 4090 Trinity OC, Case Fractal Pop Air XL, Storage Sabrent Rocket Q4 2tb, CORSAIR Force Series MP510 1920GB NVMe, CORSAIR FORCE Series MP510 960GB NVMe, PSU CORSAIR HX1000i, Cooling Corsair XC8 CPU block, Bykski GPU block, 360mm and 280mm radiator, Displays Odyssey G9, LG 34UC98-W 34-Inch,Keyboard Mountain Everest Max, Mouse Mountain Makalu 67, Sound AT2035, Massdrop 6xx headphones, Go XLR 

Oppbevaring

CPU i9-9900k, Motherboard, ASUS Rog Maximus Code XI, RAM, 48GB Corsair Vengeance LPX 32GB 3200 mhz (2x16)+(2x8) GPUs Asus ROG Strix 2070 8gb, PNY 1080, Nvidia 1080, Case Mining Frame, 2x Storage Samsung 860 Evo 500 GB, PSU Corsair RM1000x and RM850x, Cooling Asus Rog Ryuo 240 with Noctua NF-12 fans

 

Why is the 5800x so hot?

 

 

Link to comment
Share on other sites
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
 Share
Go to topic listing Cooling

×