PWM Options

Soldato
Joined
18 May 2010
Posts
12,853
Hey

Just trying to understand something and was wondering if someone could help

My OEM fan is PWM as it has a four pin connector, in my BIOS the CPU fan speed has three options

Auto
Voltage
PWM

As default it was set to Auto, i've now set it to PWM, I thought PWM was the norm these days so i'm a little confused as to why it was set to Auto from the factory and what the difference between the two settings are, anyone know?

Should Kool & Quiet also be on? Its either on or set to Auto as default I cant remember now

Thanks
 
Ah yeah auto makes sense, i've set it to PWM though and cool (or kool however AMD state it) & quiet was on as default so thats fine but one thing I ont understand is how PWM and Cool & Quiet work if they are both on
 
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