ATI / AMD HIS HD 7870 Graphics card fan speed below 16% / 20% 26%

Posted by Thorsten Niehues on Super User See other posts from Super User or by Thorsten Niehues
Published on 2012-10-27T15:46:21Z Indexed on 2012/12/02 23:13 UTC
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graphics-card

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speed

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fan

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ati

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amd

I bought a AMD / ATI HIS HD 7870 to replace my old HD 4870.

I noticed that the fan speed does not scale with the temperature: The fan speed does not get below 28% (read from catalyst / automatic fan speed)

If I manually change it in the catalyst to 20% then it has the same speed than 28% : about 900-1000 rpm.

With HIS iTurbo i manually can change the fan speed below 20%. But I noticed that changing the fan speed below 16% results in 3200 rpm.

This is really stupid and annoying since my PC is a ultra silent PC and all fans are running with about 500 rpm when the PC is idle (windows / musik movies, etc.)

Is there any way to change the fan speed to a reasonable speed like 500 rpm by software or hardware adapters (I really don't like to put a poti between the 12V line)

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