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Author Topic: 5970, Linux: How do I underclock the RAM below the allowed range?  (Read 2158 times)
Pygy
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May 24, 2011, 06:24:02 PM
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I'm trying to underclock the RAM of my Radeon 5970 below the allowed range of [1000-1500]MHz, but even aticonfig --odsc 0,999 gives me an error...

Is there a way to override the limit? I've seen many people around here with similar cards and the RAM clock set at 300MHz...
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martok
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May 24, 2011, 08:01:58 PM
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Hi,

There is a thread on this in the forum somewhere. But try to get hold of amdoverdrivectrl. I use it to downclock the RAM on a 5970.
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May 24, 2011, 08:11:11 PM
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I use RBE and flash the BIOS to the settings I want.

If you're searching these lines for a point, you've probably missed it.  There was never anything there in the first place.
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May 24, 2011, 08:39:40 PM
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Hi,

There is a thread on this in the forum somewhere. But try to get hold of amdoverdrivectrl. I use it to downclock the RAM on a 5970.
I think this is the one, https://forum.bitcoin.org/index.php?topic=9569
It works, but would be nice to have a more streamline process.

martok
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May 24, 2011, 09:09:09 PM
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You can streamline it. My script looks something like:
for i in 0 3 4 7; do
amdoverdrivectrl -b -i $i 5970.xml
done

Stick that in your .gnomerc or whatever and you're good to go.
Pygy
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May 24, 2011, 10:23:25 PM
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Thank you, I'll have a look at that, probably tomorrow.

What can I expect in terms of temperature by underclocking the RAM it to the 300-400MHz range?
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May 25, 2011, 02:09:21 AM
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Thank you, I'll have a look at that, probably tomorrow.

What can I expect in terms of temperature by underclocking the RAM it to the 300-400MHz range?
My 5870 dropped from 75C to 58C  Cool

Pygy
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May 26, 2011, 12:05:40 PM
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Ok, I got AMDOverdrivectrl to work :-)
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