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Pwn hub on cpu opt ?

post #1 of 24
Thread Starter 
hi, currently running Noctua D-15 , z170 hero asus, phanteks case (luxe or primo).all cha_fans and cpu_fans are 4-pin headers.
Do i connect..
1.noctua d15s fans with Y splitter onto cpu_fan1 and phanteks pwm hub to cpu_opt
2.noctua d 15s fan to cpu_fan1 and cpu_opt and connect phanteks pwn hub to cha_fan1

theres a total of 6 fans connecting to the phanteks pwn hub. Thanks. hope for your reply.
Edited by EyeChoose - 11/1/15 at 1:32pm
post #2 of 24
I personally would do #2
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post #3 of 24
i'd go with option 2 so you don't have to go through a splitter. but it doesn't really matter since asus has a good fan control software with their mobo so either way can control the fans just fine.
post #4 of 24
Thread Starter 
Quote:
Originally Posted by kill View Post

I personally would do #2

Quote:
Originally Posted by psyclum View Post

i'd go with option 2 so you don't have to go through a splitter. but it doesn't really matter since asus has a good fan control software with their mobo so either way can control the fans just fine.
all cha_fans and cpu_fans are 4-pin headers. does that change anything ?
post #5 of 24
asus mobo headers can be configured to function both as a voltage regulator controller (3 pin) or a pulse width modulation controller (4 pin) it's all in their bios / software. you just need to configure it to work either as a 3 pin or a 4 pin.

it's one of the reasons why you pay big money to get a ROG board.
post #6 of 24
Thread Starter 
Quote:
Originally Posted by psyclum View Post

asus mobo headers can be configured to function both as a voltage regulator controller (3 pin) or a pulse width modulation controller (4 pin) it's all in their bios / software. you just need to configure it to work either as a 3 pin or a 4 pin.

it's one of the reasons why you pay big money to get a ROG board.
i heard theres true pwm on a mobo and a pwm that just powers the fans.
post #7 of 24
"true PWM" is provided by the mobo header which supplies PWM signal, RPM sensor, 12v power, and ground. PWM that just power the fans removes the RPM signal so the mobo doesn't get confused as to which fan it's reading the RPM signal from. typically, you use a "master fan" that you connect the RPM signal to so the mobo knows what speed the fan is spinning at. and then you hook up "slave fans" (typically identical model but doesn't have to be) to the "PWM splitter" that does not connect the RPM sensor and is powered by the molex rather then the mobo itself. however it does receive the PWM signal from the mobo so the speed is controlled by the mobo header.

as far as fan control for your mobo, you may want to look at this vid and read the notes on the vid
post #8 of 24
Thread Starter 
Quote:
Originally Posted by psyclum View Post

"true PWM" is provided by the mobo header which supplies PWM signal, RPM sensor, 12v power, and ground. PWM that just power the fans removes the RPM signal so the mobo doesn't get confused as to which fan it's reading the RPM signal from. typically, you use a "master fan" that you connect the RPM signal to so the mobo knows what speed the fan is spinning at. and then you hook up "slave fans" (typically identical model but doesn't have to be) to the "PWM splitter" that does not connect the RPM sensor and is powered by the molex rather then the mobo itself. however it does receive the PWM signal from the mobo so the speed is controlled by the mobo header.

as far as fan control for your mobo, you may want to look at this vid and read the notes on the vid
ive watched the video. trying to understand. sorry so basically when u said master fan = fans connect to cpu_fan right?
whats the best way you recommend or your opinion to connect my fans ? noctua d15 fans to cpu_fan1 and cpu_opt and connect pwn hub to cha_fan1 (4pin)
or noctua d15 fans with y spliter to cpu fan_1 and pwn hub to cpu_opt ?
post #9 of 24
Thread Starter 
in bios when i changed chasis fan 1 Q fan control.
theres an option to choose from Q-fan source, = CPU , Motherboard , VRM , Thermalsensor,
which is the best to choose from out of the 4 ?
post #10 of 24
Quote:
Originally Posted by EyeChoose View Post

in bios when i changed chasis fan 1 Q fan control.
theres an option to choose from Q-fan source, = CPU , Motherboard , VRM , Thermalsensor,
which is the best to choose from out of the 4 ?

depends on which fan you are trying to control. there is really only 2 temps you care about. 1 is the CPU temp. the other is the GPU temp. CPU temp is simple, the mobo already knows what the CPU temp is from the chip. GPU temp on the other hand, you will need a thermal sensor (taped to the back of your vid card where the GPU is located.) the fan(s) that are lined up to directly supply cooling air to the GPU should be based on the GPU temp (thermal sensor) and the rest of the fans should be based on CPU temp. w/o knowing exactly how you intend to place the fans in your case, it's difficult to tell you which fan to use which temp.

you shouldn't have to worry about your mobo and VRM temps. they should be fine if your CPU and GPU temps are good because the airflow from getting the CPU and GPU temps to a reasonable level will also keep the VRM and mobo at a reasonable temp.
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