Do Different Case Fans Need To Be Connected To Specific CHA_FAN ...

Search

Everywhere Threads This forum This thread Search titles only Note By: Search Advanced search… Everywhere Threads This forum This thread Search titles only By: Search Advanced… Log in Register What's new

Search

Everywhere Threads This forum This thread Search titles only Note By: Search Advanced search… Everywhere Threads This forum This thread Search titles only By: Search Advanced… Toggle sidebar Toggle sidebar Menu Install the app Install How to install the app on iOS

Follow along with the video below to see how to install our site as a web app on your home screen.

Note: This feature may not be available in some browsers.

• Home
• Featured
• Forums New posts Search forums
• What's new Featured content New posts Latest activity

• AMD Ryzen 7 9850X3D review: The world's fastest gaming processor, again!

Do different case fans need to be connected to specific CHA_FAN connectors?

• Thread starter Thread starter CheekySparrow
• Start date Start date Apr 21, 2017

Toggle sidebar Toggle sidebar

• Home
• Forums
• Hardware
• Components

You are using an out of date browser. It may not display this or other websites correctly.You should upgrade or use an alternative browser. C

CheekySparrow

Prominent

Apr 21, 2017 2 0 510 Do case fans need to be connected to specific CHA_FAN connectors, i.e. does the numbering matter? I was assembling my PC yesterday and I connected intake fan to CHA_FAN2, and exhaust fan to CHA_FAN1, because it was more convenient ergonomically, however I wonder if it should be the other way around, and if it does matter at all, since chassis fans spin at different speeds (checked via SpeedFan). I have Corsair Carbide 400C case. Any insights are welcome, thank you. Solution In general, no, it does not matter. There are a FEW exceptions or, more correctly, factors to consider. First, case ventilation fans should not be connected to CPU_FAN or CPU_OPT headers, but you already are doing that right. IF your mobo has a header with the label PWR_FAN, do not use it. That is a special-purpose header intended for a way to connect special leads from a PSU to the mobo solely to allow the mobo to display the speed of the fan inside the PSU. It's not for case fans. SOME mobos have several options available for which temperature sensor is used for each fan header. The common basic system has only two temperature sensors. One is built into the CPU chip itself and automatically is used to guide the control system on the... Sort by date Sort by votes

Nigel Spike

Distinguished

Jan 9, 2016 1,101 113 20,490 If the fan headers on the motherboard are of the same type, use the header closest to where the fan is located, as you appear to have done. If they are of different types, you have to decide what type of fan setup you want. There are extension cables to be bought if needed. Nigel Upvote 1 Downvote P

Paperdoc

Polypheme

Ambassador Oct 19, 2006 12,048 1,338 69,340 In general, no, it does not matter. There are a FEW exceptions or, more correctly, factors to consider. First, case ventilation fans should not be connected to CPU_FAN or CPU_OPT headers, but you already are doing that right. IF your mobo has a header with the label PWR_FAN, do not use it. That is a special-purpose header intended for a way to connect special leads from a PSU to the mobo solely to allow the mobo to display the speed of the fan inside the PSU. It's not for case fans. SOME mobos have several options available for which temperature sensor is used for each fan header. The common basic system has only two temperature sensors. One is built into the CPU chip itself and automatically is used to guide the control system on the CPU _FAN (and possibly a CPU_OPT header). The other, built into the mobo by its maker, is used to guide all the CHA_FAN or SYS_FAN headers. On such a system, all the CHA_FAN etc. headers are equivalent, unless you customize their controls. But come fancier mobos also include one or two additional temperature sensors and allow you, for EACH CHA_FAN or SYS_FAN header, to choose which temperature sensor is user to guide each header. IF your mobo has such a system you can choose to make those headers somewhat different in that way. AND, if you have such a system, check it: many of them are set by default to use the CPU internal sensor for all fan control, whereas the case ventilation fans ought to be guided by a mobo sensor. Upvote 1 Downvote Solution P

Paperdoc

Polypheme

Ambassador Oct 19, 2006 12,048 1,338 69,340 Thanks for Best Solution. Upvote 1 Downvote You must log in or register to reply here. Share: Facebook X Bluesky LinkedIn Reddit Tumblr WhatsApp Email Share Link

TRENDING THREADS

• Tom's Hardware Member System Gallery
  • Started by tecmo34
  • Apr 30, 2011
  • Replies: 5K
  Systems
• DiscussionWhat's your favourite video game you've been playing?
  • Started by amdfangirl
  • Aug 3, 2014
  • Replies: 4K
  PC Gaming
• F QuestionWierd performance on my new build
  • Started by fahd.rf8
  • Today at 10:23 AM
  • Replies: 27
  PC Gaming
• NewsChina-made Loongson 12-core chip is approximately three times slower than six-core Ryzen 5 9600X — 3B6000 hampered by low clock speeds in Linux ben...
  • Started by Admin
  • Tuesday at 12:15 PM
  • Replies: 38
  News Comments
• NewsYet another Windows update is wreaking havoc on gaming rigs worldwide — Nvidia recommends uninstalling Windows 11 KB5074109 January update to preve...
  • Started by Admin
  • Today at 12:05 PM
  • Replies: 8
  News Comments
• NewsReport claims Nvidia will not be releasing any new RTX gaming GPUs in 2026, RTX 60 series likely debuting in 2028
  • Started by Admin
  • Today at 1:45 PM
  • Replies: 9
  News Comments
• News‘Most of you steal your software’ — Bill Gates complained about software piracy 50 years ago, and was openly irked by community's Altair BASIC ‘theft’
  • Started by Admin
  • Yesterday at 10:10 AM
  • Replies: 15
  News Comments

Latest posts

• QuestionRecommendations for a good UPS ?
  • Latest: MC23
  • A moment ago
  Power Supplies
• QuestionNvme Hardware RAID enclosure
  • Latest: thestryker
  • 1 minute ago
  Storage
• QuestionRecommendations on how to fix ground loop noise ?
  • Latest: VermilionNeko
  • 3 minutes ago
  Computer Peripherals
• H QuestionCode 43 - Precision laptop's GPU stopped working
  • Latest: hankaaron57
  • 26 minutes ago
  Graphics Cards
• QuestionStutter every Second until I tab out
  • Latest: Aeacus
  • 33 minutes ago
  Systems
• D QuestionSatellite S855-S5378 bios
  • Latest: Digaa
  • 51 minutes ago
  Laptop Tech Support
• D QuestionCPU reaching high temperatures after a GPU driver updates
  • Latest: davidacellphone
  • Today at 2:29 PM
  CPUs

Moderators online

• 
• 
• 
• 
• 

Share this page

Facebook X Bluesky LinkedIn Reddit Tumblr WhatsApp Email Share Link COMPANY Space.com is part of Future plc, an international media group and leading digital publisher. Visit our corporate site. © Future Publishing Limited Quay House, The Ambury, Bath BA1 1UA. All rights reserved. England and Wales company registration number 2008885. RESOURCES

• Advertising
• Cookies Policies
• Privacy
• Term & Conditions
• Topics

FOLLOW Facebook Twitter Instagram Top Bottom