Go Back   Hardware Canucks > CASES & COOLING > Air Cooling

    
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old March 7, 2010, 12:44 AM
MVP
 
Join Date: Dec 2009
Posts: 299

My System Specs

Default Is it ok to plug a case fan in a pwr MB connection?

out of four pin's on my psu and need an eighth for the right fan on my cm 690 case. Would it be alright to use the PWR connection on the motherboard even though its supposed to be for a psu?
Reply With Quote
  #2 (permalink)  
Old March 7, 2010, 01:14 AM
M1K3Z0R's Avatar
Rookie
 
Join Date: Oct 2009
Location: London/Brantford ON
Posts: 48

My System Specs

Default

AFAIK, that PWR connector is intended to report back the fan speed of the PSU. Depends if it has a +12v pinout, but if you connect it and the fan doesn't spin, there is your reason
Reply With Quote
  #3 (permalink)  
Old March 7, 2010, 08:18 AM
Banned
F@H
 
Join Date: Sep 2009
Location: Montreal, QC
Posts: 5,415

My System Specs

Default

Are you talking about plugging the 4-pin female molex connector from the fan into the male molex connector on the motherboard? If that is what you mean, then no, you can't do that.
Reply With Quote
  #4 (permalink)  
Old March 7, 2010, 09:04 AM
MVP
 
Join Date: Dec 2009
Posts: 299

My System Specs

Default

Quote:
Originally Posted by Zero82z View Post
Are you talking about plugging the 4-pin female molex connector from the fan into the male molex connector on the motherboard? If that is what you mean, then no, you can't do that.

no, its a three pin without the adapter. I know it will plug in i'm just not sure if my pc with blow up or something haha. reading on another forum that it will work as long as the fan has three live wires

trying something new, instead of buying a low pro 80mm fan for the right side of my 690 i'm gonna stick a stock cpu heatsink fan over there as when you place it off axis (like a diamond) up to the side panel vent/holes the top and botto hole seem to line up perfect so i would just attatch it to the sidepanel instead of inside the case where the 80mm fan would go. just need to get an extension cause the wire wont reach
Reply With Quote
  #5 (permalink)  
Old March 7, 2010, 09:06 AM
MVP
 
Join Date: Dec 2009
Posts: 299

My System Specs

Default

Quote:
Originally Posted by M1K3Z0R View Post
AFAIK, that PWR connector is intended to report back the fan speed of the PSU. Depends if it has a +12v pinout, but if you connect it and the fan doesn't spin, there is your reason

got ya. this must be where that third wire comes in.
Reply With Quote
  #6 (permalink)  
Old March 7, 2010, 11:26 AM
Banned
F@H
 
Join Date: Sep 2009
Location: Montreal, QC
Posts: 5,415

My System Specs

Default

The third wire (yellow) is for RPM monitoring. The red one is for power and the black one is ground. You only need the red and black wires for the fan to run. If the fan header on the motherboard has three pins, it should work fine.
Reply With Quote
  #7 (permalink)  
Old March 7, 2010, 06:04 PM
Varroa's Avatar
Allstar
 
Join Date: Nov 2007
Location: National Capital Region, Canada
Posts: 741

My System Specs

Default

I do it all the time. I have one plugged into my PWR header right now and it works fine. BIOS shows a low RPM warning but that is all.
__________________
GAMER: Win7 Pro x64, I7 3770 (stock) (CM 212+), Asus P8Z77-V Pro, Gigabyte 7970 OC Ghz Edition 3 GB, Corsair Vengeance LP 4 x 4GB DDR3 1600Mhz, Crucial M4 120 GB + 256GB, Intel X25-M 160GB, 1TB WD Blk, BRD, HX750W, Auz X-Fi Prelude, & Fractal Design Arc MIDI R2

Lenovo Ideapad Y510p: i7-4700MQ 2.4GHz (undervolted by 80mV), 16GB DDR3L-1866MHz, Intel GMA 4600HD / SLI'ed Nvidia Geforce GT 755M 2GB GDDR5, 240 GB Crucial SSD, 128GB M.2 SSD, 15.6" HD+ Glossy LED
Reply With Quote
  #8 (permalink)  
Old March 7, 2010, 08:24 PM
MVP
 
Join Date: Dec 2009
Posts: 299

My System Specs

Default

nice

how exactly does the fan run? one speed? is it audjusting with the psu temp? fast? slow?
Reply With Quote
  #9 (permalink)  
Old March 7, 2010, 11:30 PM
MVP
 
Join Date: Dec 2009
Posts: 299

My System Specs

Default

so much for a old heatsink fan working, spins way too fast (jet engine)when plugged into a regualr 4 pin with adapter so i would assume the same on the pwr connection. i'll have to buy a 80x15 mm fan from memory express
Reply With Quote
Reply


Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
CPU Fan Splitter Plug FreeKnight Air Cooling 5 February 8, 2010 08:53 AM
140 mm case fan Inik Air Cooling 8 November 16, 2009 12:01 PM
Is there a way to get yate loom to connect to cpu fan plug? Shadowmeph Air Cooling 3 March 30, 2008 05:37 PM
3 Pin to 4 Pin Fan Plug Adaptor? Thund3rball Video Cards 6 March 25, 2008 01:46 PM
xfx motherboard, vreg fan plug?? Ukonjack Troubleshooting 1 December 3, 2007 08:27 PM