Gigabyte X570 I Aorus Pro WIFI - CPU Fan header limitation

Phate

Phate

Phate

Caporegime
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Hi all,

So I want to run 4 x 120mm Noctua F12-F Chromax fans off of 1 header on my motherboard. Its an ITX board so I have only 2 Fan headers, 1 for CPU and 1 for SYS_FAN. I want the WC Pump to have its own header which leaves 4 fans to run from the CPU_FAN Header.

A colleague at lunch voiced a concern that running all 4 from 1 header might be too much, or rather concerned the thing might melt or similar.

I was looking to join 2 fans from each radiator together with a y 4-pin cable, then connect the 2 y 4-pins together with another one, and have that connected to the fan header.

Thoughts? :)
 
I have this same issue as I have the B450 ITX version of your board... I asked about multiple fans to one header and many people said not to run more than 3
 
I'd be caseful about running more than 2 fans per header as you can burn them out. Best way is to get a splitter and run 2 off each header
 
snips86x said:
I'd be caseful about running more than 2 fans per header as you can burn them out. Best way is to get a splitter and run 2 off each header
Click to expand...
Hmmm sounds like I am better off buying a fan controller to fit behind the motherboard tray and connecting all the fans to that.
 
Phate said:
Hmmm sounds like I am better off buying a fan controller to fit behind the motherboard tray and connecting all the fans to that.
Click to expand...

Or go with the TT RGB fans and you get a controller that uses 1 pwm header but needs sata for power. Can control it from the software.
 
snips86x said:
Or go with the TT RGB fans and you get a controller that uses 1 pwm header but needs sata for power. Can control it from the software.
Click to expand...
Not changing the fans. I am set on the Noctuas, I already have them as well :)

Will see if Gigabyte/AORUS respond to me.
 
Phate said:
Not changing the fans. I am set on the Noctuas, I already have them as well :)

Will see if Gigabyte/AORUS respond to me.
Click to expand...
Motherboard fan headers are usually rated for 1A when it's mentioned in manual.
But let's half that for the sensible assumption that marketing "isn't fully honest".
Using Noctua's specs that would allow up to 10 fans.
And let's half also that for same reason.
Further spin up draw is likely good amount higher.

NF-F12 (which unfortunately came bundled with heatsink) is pile of marketing excrement regardless of colour:
  1. Because of marketing BS design sound profile is restless:
    Those "stator guide vanes" are in parallel with trailing edges of the blades, which causes major "bump" into airflow every time blade passes one.
    Just blow air from your mouth in narrower "beam" and move finger or pen fast back and forth through that airflow for same effect.
  2. Also it's literally powered by miniaturized vibrating roller/ICE with broken balancing.
    Putting NF-F12 or NF-P12 onto table literally makes whole table vibrate and they're the worst vibrating fans I've met in 25 years of PC hobby.
 
Err are you talking about the right fans?

I've got 4 of these running right now and frankly speaking, they're fantastic...

Thanks for the reply all the same though!
 
I'd play it safe with a splitter cable or PCB that has dedicated power. Personally I wouldn't bother with anything super expensive because your CPU header can still drive the PWM signal and you can control that, but of course there are beefy fan controllers if you fancy.

Cheap, cheerful and ugly
https://www.overclockers.co.uk/akasa-ak-cb002-pwm-fan-splitter-cable-cb-031-ak.html

Mahoosive, braided, but Molex
https://www.overclockers.co.uk/ek-water-blocks-ek-cable-splitter-4-fan-pwm-extended-wc-9cq-ek.html

Elegant
https://www.overclockers.co.uk/xspc-8-way-pwm-splitter-hub-sata-powered-white-v2-wc-469-xs.html
 
Thanks for the reply :)

In the end, I decided not to risk it and just didn't attach the PWM connection for my pump, and haven't felt the need. Its inaudible as it srands right now and just have 2 fans off each header, its running well :)
 
Cool beans. The only downside though is the incredibly tiny faff in matching your fan curves across 2 different fan outputs.
 
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