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is h80i uses pwm?

Junwei
By Junwei
in Cooling
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Hi, i am using a h80i v2 liquid cooling and i realised that in my bios for the fan speed control, i am able to choose between DC or PWM mode for the fan. From what i read online, they stated 3-pin fan can only monitor while 4pin is able to control (PWM). I have checked my motherboard and my both fan for radiator uses 3pin.

 

So now i am in a dilemma whether my fan uses PWM or not.

 

PS: I am able to control the h80i v2 fan through corsair Link.

Motherboard : Z170 Pro gaming

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3-pin is DC and 4-pin is PWM

~i5-7600k @5GHz ~Be Quiet! Dark rock 3 ~MSI GTX 1070 Gaming X 8G ~Gigabyte GA-Z270-gaming K3 ~Corsair Vengeance Red led ~NZXT S340 Elite

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1 minute ago, Glennieboyyy007 said:

3-pin is DC and 4-pin is PWM

Yea. However my h80i fans are 3pin and able to use PWM. any reason for that?

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DC fans also can be controlled through software it's just that they are less efficient than PWM ones.

 Crust : Intel Core i5 4690K @ 4.4Ghz 1.45v  |  Motherboard : MSI Z97 MPower  |  Fruity Filling : MSI GTX 960 Armor 2Way-SLI |  Cooling : Noctua NH-D15  |  RAM : 16GB Corsair Vengeance 1600Mhz | Storage : 2xSamsung 840 EVO 500GB SSDs Raid-0  |  Power Supply : Seasonic X-Series 1250W 80+Gold  |  Monitor : Dell U2713HM 27" 60Hz 1440p  |                                                                                                                                           

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4 minutes ago, Junwei said:

Yea. However my h80i fans are 3pin and able to use PWM. any reason for that?

your fans have a 3-pin right, than it is impossible to be PWM

~i5-7600k @5GHz ~Be Quiet! Dark rock 3 ~MSI GTX 1070 Gaming X 8G ~Gigabyte GA-Z270-gaming K3 ~Corsair Vengeance Red led ~NZXT S340 Elite

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1 minute ago, Glennieboyyy007 said:

your fans have a 3-pin right, than it is impossible to be PWM

 

2 minutes ago, LawrenceBarnes2013 said:

DC fans also can be controlled through software it's just that they are less efficient than PWM ones.

ohh.. So am i right to say that the option in bios (DC or PWM) doesnt affect anything for my case? Because when i selected DC for my h80i fans, i am unable to control to fan rpm in Link (0rpm) but when i changed to PWM i am able to change the fan rpm

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3 minutes ago, Junwei said:

 

ohh.. So am i right to say that the option in bios (DC or PWM) doesnt affect anything for my case? Because when i selected DC for my h80i fans, i am unable to control to fan rpm in Link (0rpm) but when i changed to PWM i am able to change the fan rpm

I think you have to have PWM enabled to control fans RPM regardless of them being PWM or DC, i think. I always had it enabled by default.

 Crust : Intel Core i5 4690K @ 4.4Ghz 1.45v  |  Motherboard : MSI Z97 MPower  |  Fruity Filling : MSI GTX 960 Armor 2Way-SLI |  Cooling : Noctua NH-D15  |  RAM : 16GB Corsair Vengeance 1600Mhz | Storage : 2xSamsung 840 EVO 500GB SSDs Raid-0  |  Power Supply : Seasonic X-Series 1250W 80+Gold  |  Monitor : Dell U2713HM 27" 60Hz 1440p  |                                                                                                                                           

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2 minutes ago, LawrenceBarnes2013 said:

I think you have to have PWM enabled to control fans RPM regardless of them being PWM or DC, i think. I always had it enabled by default.

Alright! Thanks for enlighting my doubts !

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1 minute ago, Junwei said:

Alright! Thanks for enlighting my doubts !

No problem ;) 

 Crust : Intel Core i5 4690K @ 4.4Ghz 1.45v  |  Motherboard : MSI Z97 MPower  |  Fruity Filling : MSI GTX 960 Armor 2Way-SLI |  Cooling : Noctua NH-D15  |  RAM : 16GB Corsair Vengeance 1600Mhz | Storage : 2xSamsung 840 EVO 500GB SSDs Raid-0  |  Power Supply : Seasonic X-Series 1250W 80+Gold  |  Monitor : Dell U2713HM 27" 60Hz 1440p  |                                                                                                                                           

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