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Maximus VI extreme and swiftech PWM splitter

Jarto
Level 7
Hi everybody,

First of all, sorry about my english....

I recently have acquired a maximus VI extreme, witch I use with a 4770K and a swiftech h220 AIO liquid cooler.
Packed with the cooler it comes a 8 way PWM splitter, and swiftech recommend to use it for controlling the fans and the pump of the cooling system at the same time (http://www.swiftech.com/8-WayPWMsplitter.aspx).

The problem is that, plugin it to the cpu fan connector does not allows me to control the pump and fans speeds (it runs at full speed allways)
I cant do it at the bios nor at the fan expert software....


¿Is there any issue with this motherboard that does not allow to use this splitter ?

Thanks a lot for your help in advance...
8,803 Views
5 REPLIES 5

Chino
Level 15
Welcome to the ROG forums, Jarto.

Navigate to the Monitor menu. Then click the Fan Speed Monitor option. You'll see the CPU Q-Fan Control option. Change it to PWM mode. Then a bunch of options should appear for you to tweak the temperatures and fan speeds.

Chino wrote:
Welcome to the ROG forums, Jarto.

Navigate to the Monitor menu. Then click the Fan Speed Monitor option. You'll see the CPU Q-Fan Control option. Change it to PWM mode. Then a bunch of options should appear for you to tweak the temperatures and fan speeds.


Thanks for your answer.

Right now I'm not on my computer, but I'll check on sunday.
Anyway, I'm pretty sure that i dont have the PWM mode option in that menu...

I think I have the following options:

auto
disabled
advanced

But I'm not sure...

Abula
Level 9
The splitter should only use the power from the 4pin molex, and pwm signal to control the rpm of the fans. Now if you fans are not PWM but 3pin fans, then there you wont be able to control them connected to the swiftech 8pin splitter. You will need to run them on the chasis fan headers as they should be able to control 3pin via voltage.

Have you ran the fanXpert2 software where it test the fans, if you get like a chart where you can see the range into what the fans are capable.



If not watch the following video,

Jarto
Level 7
Thanks for your reply Abula.

I'm using the stock fans that comes with the cooler, they are all PWM capable, so is the pump (4 pins connector).
When I try to run the calibration from the fan xpert software, it says that the controllable range is 0.

Jarto wrote:
Thanks for your reply Abula.

I'm using the stock fans that comes with the cooler, they are all PWM capable, so is the pump (4 pins connector).
When I try to run the calibration from the fan xpert software, it says that the controllable range is 0.
Check that you have everything connected as Swiftech suggests, check the manual or website, in this type of pwm splitters there is one slot that its really important as its the one that reports the rpms to the motherboard, so crosscheck if all is connected correctly specially if this spot is. Else this would make the splitter just be a 12V splitter as the power comes directly from the 4pin molex.

Another thing is to check your motherboard bios, the asus mobos can also control the fan via bios, but very poorly in my experience, but if you have restrictions there it could cripple what fanxpert2 can do.

If you already crosscheck swiftech manual and check your connections and all is done properly, then do the following, run the splitter from 4pin CPU OPT header (with the pump and 1 of the fans of the H220) remember to connect also the 4pin molex to your PSU, and run one of the fans on CPU FAN header connector, and run fanxpert2 again, and the test from it, so you can see if you can control it, the only thing im trying to suggest is if the fans are fully PWM and are controllable to do it directly from the mobo header, if this works, then you know the fans are controllable and something in the splitter you havent connected correctly, this splitters usually have only 1 of all the connector report the rpms the others are like mirrors and all get controlled by the PWM singal, but if this slot is not populated on the splitter all will run a 12V that is provided by the 4pin molex connector.