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 Post subject: Best fan control?
PostPosted: Thu Nov 06, 2014 1:19 am 
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Joined: Fri Jan 31, 2014 6:30 am
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Is Asus' FanXpert II/III the best automatic fan control setup?
compared to Asrock, MSI or Gigabyte?


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 Post subject: Re: Best fan control?
PostPosted: Thu Nov 06, 2014 1:52 am 
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Joined: Wed Jun 13, 2007 10:12 am
Posts: 3232
Location: ITALY
antiatavist wrote:
Is Asus' FanXpert II/III the best automatic fan control setup?
compared to Asrock, MSI or Gigabyte?

Talking about software (not UEFI), it's SpeedFan (IMO/IME).

It worths to mention that ASRock (Haswell) fan control is about on par with ASUS (Haswell).

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Luca


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 Post subject: Re: Best fan control?
PostPosted: Thu Nov 06, 2014 2:31 am 
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Joined: Fri Aug 05, 2005 3:29 am
Posts: 1232
Location: UK
Asus' FanXpert II/III software works in conjunction with additional hardware on the boards that support it. It allows both PWM and 3-pin fan speeds to be dropped to levels which are potentially much lower than any other software/hardware combination. Some Asus motherboards have BIOS level Fan Stop control (the fan does not run until a target CPU temperature is reached). Regardless of which board it is FanXpert II/III can do this in software, there is nothing quieter than a fan that is not running at all.

The potential downside of this approach is that most Asus motherboards only allow fan control up to a CPU temperature of 70 or 75C. After that all fans will be set to run at 100%. However replacing the stock cooler with something like a 160mm tower unit with a 120mm PWM fan plus reasonable case air flow should be enough to contain CPU temperatures unless extreme overclocking is envisaged.

Some people simply do not like fan control software of any sort and prefer BIOS control. The Asus BIOS Silent profile used in conjunction with fans like the Noctua 120mm series may well be enough on its own. Typically it allows control from 20% PWM duty cycle and holds fan speed constant until the CPU temperature hits 40C. Only then does it begin to ramp up fan speeds. With a Noctua fan like the NF-F12 on a NH-U12S cooler the BIOS Silent profile would typically give idle speeds in the 350 to 450 range depending on ambient temperature. Using FanXpert II/III software would reduce this to more like 250 to 350 rpm.


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