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post #31 of 43
Wait so the Swiftech splitter modulates the 12V signal and not the 4th pin?
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DARPA
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Box O'Steam
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My First Build
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CPUMotherboardGraphicsRAM
3570K OC @ 4.3 P8Z77-M MSI R9 270 Gaming G.Skill Ares 4GB 1600 x 4 
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post #32 of 43
Quote:
Originally Posted by Judelexan View Post

Wait so the Swiftech splitter modulates the 12V signal and not the 4th pin?
Read what I said
Quote:
Phanteks PWM hub uses PWM signal to regulate / adjust voltage to 3-pin fans.

Swifteech PWM splitter hub splits the PWM signal to 8 4-pin fan headers with 12v power on pin-2
post #33 of 43
First, seriously!!!??? Come on man... unnecessary.
Quote:
Originally Posted by doyll View Post

Swifteech PWM splitter hub splits the PWM signal to 8 4-pin fan headers with 12v power on pin-2

See bold.

Since the Swiftech splitter uses a Molex/SATA power, I am confused as to why you mentioned the 2nd pin 12V line at all. I read what you wrote, and it wasn't clear.
DARPA
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Samsung Evo 840 Pro 128GB Pioneer Blu-Ray BDXL Noctua D14 w/ F12 PWM x 2 Noctua R8 PWM x 2 
CoolingCoolingOSMonitor
Noctua P14 FLX Noctua S12A FLX Windows 8.1 Pro Insignia 39'' HDTV 
KeyboardPowerCase
Logitech K400 Thermaltake Smart M850W Lian Li PC-60B Plus II 
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DARPA
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Box O'Steam
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My First Build
(9 items)
 
CPUMotherboardGraphicsRAM
3570K OC @ 4.3 P8Z77-M MSI R9 270 Gaming G.Skill Ares 4GB 1600 x 4 
Hard DriveOptical DriveCoolingCooling
Samsung Evo 840 Pro 128GB Pioneer Blu-Ray BDXL Noctua D14 w/ F12 PWM x 2 Noctua R8 PWM x 2 
CoolingCoolingOSMonitor
Noctua P14 FLX Noctua S12A FLX Windows 8.1 Pro Insignia 39'' HDTV 
KeyboardPowerCase
Logitech K400 Thermaltake Smart M850W Lian Li PC-60B Plus II 
CPUMotherboardGraphicsRAM
Intel Core 2 Duo E7300 @ 3.0Ghz Gigabyte GA-P35-DS3R EVGA 8800GTS 512 Wintec AMPX 1GB 800 x 4 
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post #34 of 43
well in doyll's defense,

i did understand what he meant since we all know pwm = black, red, yellow, blue... so pin 2 is in fact full 12v per pwm spec. pwm uses the blue wire(4th pin) to pulse modulate fan speed and red(pin 2) is always full 12v.

the onboard IC in the pwm fan uses the 4th pin signal to turn the fan on and off at a rapid pace to modulate fan speed. but at any given time, it is always using full 12v.

As opposed to the traditional 3pin fan that uses voltage regulation (supplying lower voltage on pin 2) to modulate fan speed.
post #35 of 43
Quote:
Originally Posted by Judelexan View Post

First, seriously!!!??? Come on man... unnecessary.
Quote:
Originally Posted by doyll View Post

Swifteech PWM splitter hub splits the PWM signal to 8 4-pin fan headers with 12v power on pin-2

See bold.

Since the Swiftech splitter uses a Molex/SATA power, I am confused as to why you mentioned the 2nd pin 12V line at all. I read what you wrote, and it wasn't clear.

As Psyclum said. thumb.gif

You mislead yourself by trying to read something into my statement and instead of asking for clarification came up with "modulates the 12V signal" .. which has no connection to what I wrote.

Swiftech splitter hub is a dumb hub. It has 8 4-pin headers with pin-4 being fed the PWM signal from motherboard CPU fan header and pins-1 & 2 being ground and 12v from PSU. Pin-3 on hub header #1 is rpm out from hub to motherboard. The wiring is basically like the image below but with 8x headers instead of 6.



The Phanteks PWM hub is really a PWM controlled variable voltage hub. It uses the PWM signal to regulate the voltage. It "translated / converts" PWM control into variable voltage. The slow fan rpm PWM signal lowers the voltage so fans run slow .. and the faster the fan rpm would be onPWM signal, the higher voltage the fan receives up to 12 volt maximum.
post #36 of 43
Thread Starter 
So are there advantages to variable voltage that the Phanteks outputs compared to the static 12V output of the Swiftech?
Edited by clankfu - 10/19/14 at 11:56am
post #37 of 43
Quit making it complicated.
They are just different ways of using multiple fans.
One is for PWM fans and the other is for variable voltage fans.
post #38 of 43
Thread Starter 
Quote:
Originally Posted by doyll View Post

Quit making it complicated.
They are just different ways of using multiple fans.
One is for PWM fans and the other is for variable voltage fans.

I'm not trying to make it complicated. This is all new to me so I'm just trying to understand.
post #39 of 43
Quote:
Originally Posted by clankfu View Post

I'm not trying to make it complicated. This is all new to me so I'm just trying to understand.
Sorry, wasn't paying attention to who's reply it was. redface.gif

No, the only "advantage" Phanteks hub has it controlling 3-pin fan .. if you have 3-pin fans.

PWM has advantages over variable voltage.
More variance in fan speed
Lower idle speed
Variable voltage usually only have 3 or 4 different voltage / speeds while PWM changes rpm in many small increments.
post #40 of 43
Thread Starter 
Quote:
Originally Posted by doyll View Post

Sorry, wasn't paying attention to who's reply it was. redface.gif

No, the only "advantage" Phanteks hub has it controlling 3-pin fan .. if you have 3-pin fans.

PWM has advantages over variable voltage.
More variance in fan speed
Lower idle speed
Variable voltage usually only have 3 or 4 different voltage / speeds while PWM changes rpm in many small increments.

Got it. Thanks man.
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