Overclock.net › Forums › Cooling › Air Cooling › connecting 3 pin fans to power supplies
New Posts  All Forums:Forum Nav:

connecting 3 pin fans to power supplies

post #1 of 3
Thread Starter 
I decided to get rid of my fan controller because it causes rattling in the fans, (see here)
so now I'm switching all my case fans over to 12v connectors on the power supply. Thing is, some of my fans only have 3 pin connectors like my Corsair 140mm and Coolermaster R4.

1. Will the 3 pin connectors always give 12v as well?

2. Do I need to use one connector for each fan, or can I splice them apart with adapters.. will this result in reduced voltage to each fan (probably).

3. Which adapters should I buy to put between the 3pin fans and the 4 pin molex connectors in the PSU? are there any cool ones that have voltage switches on them or anything?

I decided I'm going to be ok with running my fans at max voltage all the time because it won't sound as annoying as the silly fan controller does.


Would these be cool or useful for anything?


I'm not very good at electrical but I'm guessing that gives you two 12v fans, but how if the source is only one 12v. maybe I'm asking too many questions.


My PSU is the older tx750 so that's what I'll have to connect to. Here's a pic showing where I've got some free molexs. Not the ones I'm holding but tied to the drive bay.
Pictures help make the thread interesting. Thanks in advance.

Edited by 00firebird - 6/23/13 at 11:55am
High5
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5-750 Asus P7P55D-E PRO Asus GTX 670 4GB 8GB Corsair Vengeance 
Hard DriveHard DriveOSMonitor
WD Caviar Black 1TB 64GB Cache SATA 3 Seagate Barracuda 3TB 64GB Cache SATA 3 7 Ultimate x64 42'' HDTV 
KeyboardPowerCaseMouse
Logitech K800 Wireless Illuminated Corsair 750TX NZXT Tempest EVO Logitech MX Revolution 
  hide details  
Reply
High5
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5-750 Asus P7P55D-E PRO Asus GTX 670 4GB 8GB Corsair Vengeance 
Hard DriveHard DriveOSMonitor
WD Caviar Black 1TB 64GB Cache SATA 3 Seagate Barracuda 3TB 64GB Cache SATA 3 7 Ultimate x64 42'' HDTV 
KeyboardPowerCaseMouse
Logitech K800 Wireless Illuminated Corsair 750TX NZXT Tempest EVO Logitech MX Revolution 
  hide details  
Reply
post #2 of 3
If you splice the fan cable then you will provide 12v to both fans, if you wire them up in series you will share the voltage between, so 2 fans will get 6v each.
AMD Money Pit
(13 items)
 
   
CPUMotherboardRAMRAM
AMD Athlon X2 5000+  Asrock N61P-S Samsung 512MB DDR2 Samsung 512MB DDR2 
Hard DriveCoolingOSPower
Seagate 80GB SATA Cooler Master Phenom II Stock Windows 7 Ultimate x64 Dell Slim 160 Watt 
Case
XBOX Original Casing 
  hide details  
Reply
AMD Money Pit
(13 items)
 
   
CPUMotherboardRAMRAM
AMD Athlon X2 5000+  Asrock N61P-S Samsung 512MB DDR2 Samsung 512MB DDR2 
Hard DriveCoolingOSPower
Seagate 80GB SATA Cooler Master Phenom II Stock Windows 7 Ultimate x64 Dell Slim 160 Watt 
Case
XBOX Original Casing 
  hide details  
Reply
post #3 of 3
Thread Starter 
answeres for #1 and #3?
High5
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5-750 Asus P7P55D-E PRO Asus GTX 670 4GB 8GB Corsair Vengeance 
Hard DriveHard DriveOSMonitor
WD Caviar Black 1TB 64GB Cache SATA 3 Seagate Barracuda 3TB 64GB Cache SATA 3 7 Ultimate x64 42'' HDTV 
KeyboardPowerCaseMouse
Logitech K800 Wireless Illuminated Corsair 750TX NZXT Tempest EVO Logitech MX Revolution 
  hide details  
Reply
High5
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5-750 Asus P7P55D-E PRO Asus GTX 670 4GB 8GB Corsair Vengeance 
Hard DriveHard DriveOSMonitor
WD Caviar Black 1TB 64GB Cache SATA 3 Seagate Barracuda 3TB 64GB Cache SATA 3 7 Ultimate x64 42'' HDTV 
KeyboardPowerCaseMouse
Logitech K800 Wireless Illuminated Corsair 750TX NZXT Tempest EVO Logitech MX Revolution 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Air Cooling
Overclock.net › Forums › Cooling › Air Cooling › connecting 3 pin fans to power supplies