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 Post subject: A non-standard fan control technique
PostPosted: Fri Oct 26, 2012 9:39 am 
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Joined: Mon Oct 15, 2012 8:58 pm
Posts: 38
I realized something... gradually scaling fan speed up with temperature doesn't really make sense, for video cards.

This also can apply to CPUs, with different software

I took msi afterburner (I have a msi geforce TF 660 2gd5/OC) and set fan scaling to minimum, from 0 to 60C, and then from 60C to 80C it ramps from 0% duty load, to 100%, obviously sitting at 50% at 70C

I can game at idle speeds.

Now of course, my GPU has a minimum fan speed, which is 1050, which is why this method works well.


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 Post subject: Re: A non-standard fan control technique
PostPosted: Fri Oct 26, 2012 4:58 pm 
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Joined: Mon Dec 28, 2009 1:42 am
Posts: 345
Location: Australia
Yes, I've also been using that method for a while now. Although mine is a bit different:

Gigabyte 1GB HD6950 OC (3x Windforce cooler, excellent noise quality).

The fans stay at 27% (1250RPM) from 0 to 70C, then rise linearly to 45% (2150RPM) at 90C.

Playing TF2 the GPU temp only gets up to ~73C (28~29% fan speed - inaudible), while the Unigine benchmark takes it up to 84C (~40% fan speed - very quiet).

Image


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 Post subject: Re: A non-standard fan control technique
PostPosted: Sat Oct 27, 2012 9:29 am 
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Joined: Mon Oct 15, 2012 8:58 pm
Posts: 38
what would be truly optimal would be 0 to 75 at ~1000rpm, and then scaling up or down to maintain a static 75c, so if it hit 76, bump fans up 50rpm, hits 74, drop fans 50rpm, min 1000


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 Post subject: Re: A non-standard fan control technique
PostPosted: Sat Oct 27, 2012 9:32 am 
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Joined: Mon Oct 15, 2012 8:58 pm
Posts: 38
even under simultaneous prime95 and furmark i cant break 72c on cpu or gpu with a shit case with 2 crappy fans with geforce 660 overclocked to 1168 and a i5 3570 at 4.2ghz, in a closet


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