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Using up all the SysFan Pin connectors on Motherboard safe?

post #1 of 4
Thread Starter 
I currently have

2x 140mm Front LED Intake fan hooked up to SYSFAN2 & 4 on the Motherboard, along with 1x120MM Rear Exhaust Fan hooked on SYSFAN1 Pin Header_

I have 2x120mm with Splitter connected together on the 4pin CPUFAN Motherboard pin header(due to the use of the Coolermaster V6GT Cooler)_

I wanted to add an extra 120MM Fan (that attaches to the bottom of my Case) that will be attach to SYSFAN3 on my MB Header_

Would it be okay to use up all the available motherboard Fan Pin headers? Or should I just connect it all to my Molex plugs?

The reason why I ask is because, the motherboard allows me to control the fan speed, making my life easier by allow the desktop to be a lot quieter and without using excessive power due to lower fan speeds because I don't have a fan controller_

Will all these fans connected to the MB draw too much power from it causing me electrical issues? or will it all be fine? All the fans are spinning no less than 50percent of their speed as this is the lowest I can set it in bios_

Will I damage my motherboard?
Edited by httuner - 3/26/11 at 11:59am
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Hard DriveOptical DriveOSMonitor
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post #2 of 4
You can do a little bit of both. You can power off of molex and still have PWM control by the motherboard. This ensures you're not overloading the headers on the board and that your fans don't get starved of power.

Read this thread: http://www.overclock.net/air-cooling...-fans-via.html
It has a picture showing how I've wired a daisy chain of 4 fans to be controlled by the CPU fan controller, but powered off of molex.
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post #3 of 4
Thread Starter 
Thanks for the info +Rep
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CPUMotherboardGraphicsRAM
i72600K Sandybridge @ 4.8ghz MSi P67A-GD65 Galaxy GTX 580 @930mhz GSkill CL7 2x4gb 1333 @ 1866 9-10-9-24-1T 
Hard DriveOptical DriveOSMonitor
Crucial C300 128gb SSD w/1TB HDD Asus DVD-RW/CDRW Windows 7 Professional Gateway HD2201 22in LED 1080 
PowerCase
Seasonic X-850 Azza Salano 1000 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i72600K Sandybridge @ 4.8ghz MSi P67A-GD65 Galaxy GTX 580 @930mhz GSkill CL7 2x4gb 1333 @ 1866 9-10-9-24-1T 
Hard DriveOptical DriveOSMonitor
Crucial C300 128gb SSD w/1TB HDD Asus DVD-RW/CDRW Windows 7 Professional Gateway HD2201 22in LED 1080 
PowerCase
Seasonic X-850 Azza Salano 1000 
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post #4 of 4
It also depends on your fan's amperage ratings. if you use low amperage fans, youll be ok. I have some fans which I wouldnt even recommend connecting to a motherboard fan header because of their insane amount of amp draw.
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Ethylene Glycol
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core 2 Duo E7300 DFI LanParty DK X38 series Nvidia GTX 260 4gb of Mushkin 
Hard DriveOptical DriveOSMonitor
Maxtor 250GB SATA Lite-on DVD rom drive (soon to be upgraded) Windows 7, but can run Mac OSX and Linux. Hitachi CM721F flat screen CRT 
KeyboardPowerCaseMouse
Gateway Sk9920 Corsair TX750 Dunno who made the case, but its modded! HP Voodoo DNA laser mouse 
Mouse Pad
N/A 
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