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PWM Fan plugged in DC on a Fan hub?

Kywim
By Kywim
in Cooling
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Posted

Hello!

 

Currently my 2 front fans are PWM fans, but they're plugged in my DC ports on my Fractal Design fan hub.
I had to do this because the fan (Noctua AF14) cables were too short and I couldn't reach the PWM ports.

 

So, the fans speed is still controlled, but through DC on my fan hub. Can anything go wrong with that?
 

Thank you :)

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Not really. You won't be able to use PWM and you won't have as fine control over fan speed but it'll run just fine.

PLEASE QUOTE ME IF YOU ARE REPLYING TO ME

Desktop Build: Ryzen 7 2700X @ 4.0GHz, AsRock Fatal1ty X370 Professional Gaming, 48GB Corsair DDR4 @ 3000MHz, RX5700 XT 8GB Sapphire Nitro+, Benq XL2730 1440p 144Hz FS

Retro Build: Intel Pentium III @ 500 MHz, Dell Optiplex G1 Full AT Tower, 768MB SDRAM @ 133MHz, Integrated Graphics, Generic 1024x768 60Hz Monitor


 

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In some cases DC is better, it let you set the speed to very low RPM till 0 RPM.

Except the "very" high tuning it is basically the same thing.

I personally prefer DC for case fans

I have a PWM fan at the bottom and i have it set to DC, where PWM is supported .

CPU:i7 9700k 5047.5Mhz All Cores Mobo: MSI MPG Z390 Gaming Edge AC, RAM:Corsair Vengeance LPX 16GB 3200MHz DDR4 OC 3467Mhz GPU:MSI RTX 2070 ARMOR 8GB OC Storage:Samsung SSD 970 EVO NVMe M.2 250GB, 2x SSD ADATA PRO SP900 256GB, HDD WD CB 2TB, HDD GREEN 2TB PSU: Seasonic focus plus 750w Gold Display(s): 1st: LG 27UK650-W, 4K, IPS, HDR10, 10bit(8bit + A-FRC). 2nd: Samsung 24" LED Monitor (SE390), Cooling:Fazn CPU Cooler Aero 120T Push/pull Corsair ML PRO Fans Keyboard: Corsair K95 Platinum RGB mx Rapidfire Mouse:Razer Naga Chroma  Headset: Razer Kraken 7.1 Chroma Sound: Logitech X-540 5.1 Surround Sound Speaker Case: Modded Case Inverted, 5 intake 120mm, one exhaust 120mm.

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Okay nice!

 

While I'm at it, I have another question (so I don't have to make a new thread).


Is it normal for this fan to kind of "hum" when spinning at relatively high RPM? It's like a wavering hum, if you see what I mean?
I think it's caused by resonance (either from the dust filter or the flimsy fan mount). Can I do anything about this?

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24 minutes ago, Kywim said:

Okay nice!

 

While I'm at it, I have another question (so I don't have to make a new thread).


Is it normal for this fan to kind of "hum" when spinning at relatively high RPM? It's like a wavering hum, if you see what I mean?
I think it's caused by resonance (either from the dust filter or the flimsy fan mount). Can I do anything about this?

it happens with some static pressure fans that have in the front of them a grill or smth.

can't do anything, from my experience. 

CPU:i7 9700k 5047.5Mhz All Cores Mobo: MSI MPG Z390 Gaming Edge AC, RAM:Corsair Vengeance LPX 16GB 3200MHz DDR4 OC 3467Mhz GPU:MSI RTX 2070 ARMOR 8GB OC Storage:Samsung SSD 970 EVO NVMe M.2 250GB, 2x SSD ADATA PRO SP900 256GB, HDD WD CB 2TB, HDD GREEN 2TB PSU: Seasonic focus plus 750w Gold Display(s): 1st: LG 27UK650-W, 4K, IPS, HDR10, 10bit(8bit + A-FRC). 2nd: Samsung 24" LED Monitor (SE390), Cooling:Fazn CPU Cooler Aero 120T Push/pull Corsair ML PRO Fans Keyboard: Corsair K95 Platinum RGB mx Rapidfire Mouse:Razer Naga Chroma  Headset: Razer Kraken 7.1 Chroma Sound: Logitech X-540 5.1 Surround Sound Speaker Case: Modded Case Inverted, 5 intake 120mm, one exhaust 120mm.

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