Overclock.net › Forums › Cooling › Air Cooling › Benefits of using 3-Pin connector instead of Molex? (Case Fans)
New Posts  All Forums:Forum Nav:

Benefits of using 3-Pin connector instead of Molex? (Case Fans)

post #1 of 11
Thread Starter 
What exactly is the benefit of plugging it into the motherboard via 3-pin instead of being powered by the PSU's molex connectors? I mean besides the obvious being able to control the speed via BIOS.

Does plugging it into molex make it automatically spin as fast as possible?
Edited by ComradeNF - 7/22/11 at 6:23am
post #2 of 11
RPM monitor.
post #3 of 11
Yep Molex is full speed. 12 volts.


Sent from my iPod using Tapatalk
Fearless~
(20 items)
 
The Intel Side
(18 items)
 
 
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1090T @ 3.8 Asus Sabertooth 990FX EVGA GrillForce GTX 465 SLI Mushkin Blackline 2x4gb 1600mhz [1.5v] 
Hard DriveHard DriveHard DriveOptical Drive
OCZ Vertex 3 120GB WD Caviar Black (1002FAEX)1TB Synology DS210J (4tb) Lite-on DVD Rewriter 16x IDE External 
CoolingOSMonitorKeyboard
Noctua NH-D14 Windows 7 Home Premium x64 Samsung Syncmaster E2320 Metadot Das Professional S Silent 
PowerCaseMouseMouse Pad
Corsair TX 850 V1 [Original PSH] NZXT Gamma Classic Series Mid-Tower Logitech VX Revolution Razer Sphex 
AudioAudioAudioAudio
Asus Xonar DX Klipsch Promedia 2.1 Bose Triport/Klipsch S3 Blue Snowball 
CPUMotherboardGraphicsRAM
Intel i3 2100 Gigabyte H61M-S2PV Asus GT430 Corsair XMS3 2x2gb 1333mhz 
Hard DriveHard DriveHard DriveOptical Drive
Intel X-25V 40GB Synology DS210j (4tb) Seagate Barracuda 120gb LG CH12LS28 Blu Ray  
CoolingOSOSMonitor
Thermalright X-Silent 120 Mac OS X 10.8.2 Windows 7 Ultimate x64 Toshiba 46VX700VU 
KeyboardPowerCaseMouse
Microsoft Wireless Optical Desktop 700 XFX 450w Core Edition Silverstone ML03B Microsoft Wireless Optical Desktop 700 
AudioAudio
Realtek Onboard Klipsch Promedia 2.1 
CPUMotherboardGraphicsRAM
Core 2 Duo P8700 2.53ghz Apple Logic Board Nvidia Geforce 9400m 4gb @1066 
Hard DriveHard DriveOptical DriveOS
Western Digital Scorpio Black 320gb Synology DS210j (4tb) Apple SuperDrive Mac OS X 10.8.4/Windows 7 Ultimate 64bit 
MonitorKeyboardPowerCase
13" 1280x800 Glossy Backlit Apple Keyboard/OCN Ducky Tenkeyless [MX... 65w Magsafe Aluminium Unibody 
MouseAudioAudio
Apple Trackpad/Logitech MX310 Fiio A1 + Sony Bookshelf Blue Snowball 
  hide details  
Reply
Fearless~
(20 items)
 
The Intel Side
(18 items)
 
 
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1090T @ 3.8 Asus Sabertooth 990FX EVGA GrillForce GTX 465 SLI Mushkin Blackline 2x4gb 1600mhz [1.5v] 
Hard DriveHard DriveHard DriveOptical Drive
OCZ Vertex 3 120GB WD Caviar Black (1002FAEX)1TB Synology DS210J (4tb) Lite-on DVD Rewriter 16x IDE External 
CoolingOSMonitorKeyboard
Noctua NH-D14 Windows 7 Home Premium x64 Samsung Syncmaster E2320 Metadot Das Professional S Silent 
PowerCaseMouseMouse Pad
Corsair TX 850 V1 [Original PSH] NZXT Gamma Classic Series Mid-Tower Logitech VX Revolution Razer Sphex 
AudioAudioAudioAudio
Asus Xonar DX Klipsch Promedia 2.1 Bose Triport/Klipsch S3 Blue Snowball 
CPUMotherboardGraphicsRAM
Intel i3 2100 Gigabyte H61M-S2PV Asus GT430 Corsair XMS3 2x2gb 1333mhz 
Hard DriveHard DriveHard DriveOptical Drive
Intel X-25V 40GB Synology DS210j (4tb) Seagate Barracuda 120gb LG CH12LS28 Blu Ray  
CoolingOSOSMonitor
Thermalright X-Silent 120 Mac OS X 10.8.2 Windows 7 Ultimate x64 Toshiba 46VX700VU 
KeyboardPowerCaseMouse
Microsoft Wireless Optical Desktop 700 XFX 450w Core Edition Silverstone ML03B Microsoft Wireless Optical Desktop 700 
AudioAudio
Realtek Onboard Klipsch Promedia 2.1 
CPUMotherboardGraphicsRAM
Core 2 Duo P8700 2.53ghz Apple Logic Board Nvidia Geforce 9400m 4gb @1066 
Hard DriveHard DriveOptical DriveOS
Western Digital Scorpio Black 320gb Synology DS210j (4tb) Apple SuperDrive Mac OS X 10.8.4/Windows 7 Ultimate 64bit 
MonitorKeyboardPowerCase
13" 1280x800 Glossy Backlit Apple Keyboard/OCN Ducky Tenkeyless [MX... 65w Magsafe Aluminium Unibody 
MouseAudioAudio
Apple Trackpad/Logitech MX310 Fiio A1 + Sony Bookshelf Blue Snowball 
  hide details  
Reply
post #4 of 11
Yes it does spin 100% on molex.
post #5 of 11
Thread Starter 
Quote:
Originally Posted by Citra;14305540 
Yep Molex is full speed. 12 volts.


Sent from my iPod using Tapatalk

What if the fan only has a 3-Pin and you use a 3-Pin to Molex converter and plug it into molex? Is it still 12V?
post #6 of 11
Quote:
Originally Posted by ComradeNF;14305559 
What if the fan only has a 3-Pin and you use a 3-Pin to Molex converter and plug it into molex? Is it still 12V?

Still 12 v, still max speed. The Molex to 3 pin doesn't change voltage.


Sent from my iPod using Tapatalk
Fearless~
(20 items)
 
The Intel Side
(18 items)
 
 
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1090T @ 3.8 Asus Sabertooth 990FX EVGA GrillForce GTX 465 SLI Mushkin Blackline 2x4gb 1600mhz [1.5v] 
Hard DriveHard DriveHard DriveOptical Drive
OCZ Vertex 3 120GB WD Caviar Black (1002FAEX)1TB Synology DS210J (4tb) Lite-on DVD Rewriter 16x IDE External 
CoolingOSMonitorKeyboard
Noctua NH-D14 Windows 7 Home Premium x64 Samsung Syncmaster E2320 Metadot Das Professional S Silent 
PowerCaseMouseMouse Pad
Corsair TX 850 V1 [Original PSH] NZXT Gamma Classic Series Mid-Tower Logitech VX Revolution Razer Sphex 
AudioAudioAudioAudio
Asus Xonar DX Klipsch Promedia 2.1 Bose Triport/Klipsch S3 Blue Snowball 
CPUMotherboardGraphicsRAM
Intel i3 2100 Gigabyte H61M-S2PV Asus GT430 Corsair XMS3 2x2gb 1333mhz 
Hard DriveHard DriveHard DriveOptical Drive
Intel X-25V 40GB Synology DS210j (4tb) Seagate Barracuda 120gb LG CH12LS28 Blu Ray  
CoolingOSOSMonitor
Thermalright X-Silent 120 Mac OS X 10.8.2 Windows 7 Ultimate x64 Toshiba 46VX700VU 
KeyboardPowerCaseMouse
Microsoft Wireless Optical Desktop 700 XFX 450w Core Edition Silverstone ML03B Microsoft Wireless Optical Desktop 700 
AudioAudio
Realtek Onboard Klipsch Promedia 2.1 
CPUMotherboardGraphicsRAM
Core 2 Duo P8700 2.53ghz Apple Logic Board Nvidia Geforce 9400m 4gb @1066 
Hard DriveHard DriveOptical DriveOS
Western Digital Scorpio Black 320gb Synology DS210j (4tb) Apple SuperDrive Mac OS X 10.8.4/Windows 7 Ultimate 64bit 
MonitorKeyboardPowerCase
13" 1280x800 Glossy Backlit Apple Keyboard/OCN Ducky Tenkeyless [MX... 65w Magsafe Aluminium Unibody 
MouseAudioAudio
Apple Trackpad/Logitech MX310 Fiio A1 + Sony Bookshelf Blue Snowball 
  hide details  
Reply
Fearless~
(20 items)
 
The Intel Side
(18 items)
 
 
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1090T @ 3.8 Asus Sabertooth 990FX EVGA GrillForce GTX 465 SLI Mushkin Blackline 2x4gb 1600mhz [1.5v] 
Hard DriveHard DriveHard DriveOptical Drive
OCZ Vertex 3 120GB WD Caviar Black (1002FAEX)1TB Synology DS210J (4tb) Lite-on DVD Rewriter 16x IDE External 
CoolingOSMonitorKeyboard
Noctua NH-D14 Windows 7 Home Premium x64 Samsung Syncmaster E2320 Metadot Das Professional S Silent 
PowerCaseMouseMouse Pad
Corsair TX 850 V1 [Original PSH] NZXT Gamma Classic Series Mid-Tower Logitech VX Revolution Razer Sphex 
AudioAudioAudioAudio
Asus Xonar DX Klipsch Promedia 2.1 Bose Triport/Klipsch S3 Blue Snowball 
CPUMotherboardGraphicsRAM
Intel i3 2100 Gigabyte H61M-S2PV Asus GT430 Corsair XMS3 2x2gb 1333mhz 
Hard DriveHard DriveHard DriveOptical Drive
Intel X-25V 40GB Synology DS210j (4tb) Seagate Barracuda 120gb LG CH12LS28 Blu Ray  
CoolingOSOSMonitor
Thermalright X-Silent 120 Mac OS X 10.8.2 Windows 7 Ultimate x64 Toshiba 46VX700VU 
KeyboardPowerCaseMouse
Microsoft Wireless Optical Desktop 700 XFX 450w Core Edition Silverstone ML03B Microsoft Wireless Optical Desktop 700 
AudioAudio
Realtek Onboard Klipsch Promedia 2.1 
CPUMotherboardGraphicsRAM
Core 2 Duo P8700 2.53ghz Apple Logic Board Nvidia Geforce 9400m 4gb @1066 
Hard DriveHard DriveOptical DriveOS
Western Digital Scorpio Black 320gb Synology DS210j (4tb) Apple SuperDrive Mac OS X 10.8.4/Windows 7 Ultimate 64bit 
MonitorKeyboardPowerCase
13" 1280x800 Glossy Backlit Apple Keyboard/OCN Ducky Tenkeyless [MX... 65w Magsafe Aluminium Unibody 
MouseAudioAudio
Apple Trackpad/Logitech MX310 Fiio A1 + Sony Bookshelf Blue Snowball 
  hide details  
Reply
post #7 of 11
Quote:
Originally Posted by ComradeNF;14305559 
What if the fan only has a 3-Pin and you use a 3-Pin to Molex converter and plug it into molex? Is it still 12V?

Yes but you can get resistors that will lower the voltage. I bought some 140mm aerocool shark fans that came with both Molex to 3pin adapters and resistors. Pretty handy.
http://www.aerocool.us/accessory/shark_b14.html

Here is something similar.
http://www.avadirect.com/product_details_parts.asp?PRID=15359

Not sure about that website, I just linked it to show what I'm talking about.

You can also rewire it so that the +5 V line (red) of the Molex is providing power instead of the +12 V (yellow).
Edited by Epitope - 7/22/11 at 6:39am
    
CPUMotherboardGraphicsRAM
i7 950 3.2 GHz at 1.0V Asus Rampage III Formula Asus HD6870 6GB Mushkin Redline 1600MHz 6-8-6-24 
Hard DriveOptical DriveCoolingOS
Samsung 250 GB SSD,2X 1TB F3, 250GB WD Blue, 1T... Asus BD Megahalems black chrome edition Windows 7 Professional 
MonitorKeyboardPowerCase
2x Asus 24" Mac keyboard Enermax ERV950EWT Silverstone FT02 
MouseMouse PadAudio
Logitech MX518 Steelseries I-2 Onkyo 1000W 7.1 surround through HDMI 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7 950 3.2 GHz at 1.0V Asus Rampage III Formula Asus HD6870 6GB Mushkin Redline 1600MHz 6-8-6-24 
Hard DriveOptical DriveCoolingOS
Samsung 250 GB SSD,2X 1TB F3, 250GB WD Blue, 1T... Asus BD Megahalems black chrome edition Windows 7 Professional 
MonitorKeyboardPowerCase
2x Asus 24" Mac keyboard Enermax ERV950EWT Silverstone FT02 
MouseMouse PadAudio
Logitech MX518 Steelseries I-2 Onkyo 1000W 7.1 surround through HDMI 
  hide details  
Reply
post #8 of 11
if your buying a fan i dont see the point in slowing it down, then its not performing to its full potential. Its like buying a cpu overclocking it to 3.3ghz when it can do 3.6ghz
post #9 of 11
^ because they are noisy at full speed

Sent from my Droid X via Tapatalk
Flag Ship
(16 items)
 
  
CPUMotherboardGraphicsRAM
Sandy Bridge 2600k ASRock Extreme6 Z77 EVGA GTX680 Patriot Viper 3 Intel Extreme Masters 2133MHz 
Hard DriveHard DriveOptical DriveCooling
WD Caviar Black 1TB 7200rpm OCZ Agility 2 LG 12x BD-ROM Cooler Master Hyper 212 Evo 
OSMonitorKeyboardPower
Windows 7 x64 Asus 23.6" LED Logitech G110 Rosewell 1000w 
CaseMouseMouse PadAudio
NZXT Switch 810 (White) Logitech G9x Razer Vespula Creative Sound Blaster Titanium 
  hide details  
Reply
Flag Ship
(16 items)
 
  
CPUMotherboardGraphicsRAM
Sandy Bridge 2600k ASRock Extreme6 Z77 EVGA GTX680 Patriot Viper 3 Intel Extreme Masters 2133MHz 
Hard DriveHard DriveOptical DriveCooling
WD Caviar Black 1TB 7200rpm OCZ Agility 2 LG 12x BD-ROM Cooler Master Hyper 212 Evo 
OSMonitorKeyboardPower
Windows 7 x64 Asus 23.6" LED Logitech G110 Rosewell 1000w 
CaseMouseMouse PadAudio
NZXT Switch 810 (White) Logitech G9x Razer Vespula Creative Sound Blaster Titanium 
  hide details  
Reply
post #10 of 11
Quote:
Originally Posted by Rowey;14305677 
if your buying a fan i dont see the point in slowing it down, then its not performing to its full potential. Its like buying a cpu overclocking it to 3.3ghz when it can do 3.6ghz

if you're buying delta fans...
and always plug them full speed,
then you seat <1m from your cpu.

then, dude....
I do salute you hypocritesmiley.png
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Air Cooling
Overclock.net › Forums › Cooling › Air Cooling › Benefits of using 3-Pin connector instead of Molex? (Case Fans)