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258 posts

Ultimate Geek

#269688 2-Apr-2020 13:45
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Hello there. 


I have a Gigabyte a320m-s2h motherboard that comes with x1 CPU fan header and x1 system fan header. 


I want to control five 3 pin fans through voltage (can change in BIOS) which I will run through the system fan header. 1 Cooler Master 120mm fan rear exhaust. 1 ARCTIC F12-120 mm for top exhaust. Front =1 ARCTIC F14-140 mm, 1 ARCTIC F12-120 mm, & 1 Cooler Master 140 mm fan (front cant hold x3 140mm fans). I played around with all possible fan configurations, and this seems to deliver the lowest temperature (didn't test with 4 or less fans however).


I currently run them through a Deepcool fh-10 hub, but because it runs off SATA, these fans receive full power and nothing less (1513 RPM). She's a bit noisy. Although not bad considering they're on full blast. Still a bit confused on the SATA part though, since I saw one on newegg that reckons it can run off SATA and control 3-pin fans. 


My CPU cooler occupies the CPU header. 


My question is; is it feasible to run a 1-5 splitter into the system fan header (think arctic fans only take 0.071A?), or does anyone recommend a good 3-pin hub? The Phanteks PWM Fan Hub would be perfect, but is difficult to find a site that has one available. Some decent splitters on Amazon/Aliexpress. 


Alternatively, I could keep the exhaust fans on full power and use a splitter just for the front fans. 


Thank you. 







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904 posts

Ultimate Geek


  #2452963 2-Apr-2020 13:59
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You could make a splitter but you could only pick one and let it provide the speed signal and run the others with only two wires connected in parallel. It would mean that 4 of them would be running at an unknown speed +/- what the fan providing the signal is attempting to target.

9745 posts

Uber Geek

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  #2452969 2-Apr-2020 14:05
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personally i would buy a fan hub


311 posts

Ultimate Geek


  #2453217 2-Apr-2020 17:51
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Your best bet is one of these.


It gets past the power problem that can come with running too many fans and allows PWM control.



258 posts

Ultimate Geek

  #2453528 3-Apr-2020 09:32
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That cable should do the trick nicely. Thank you

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