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Author Topic: 6970 Constantly Changing core clock!  (Read 2245 times)
Trini8ed
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July 14, 2011, 05:59:20 AM
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So idk whats going on but my sapphire 6970's core clock fluctuates between 840 and 880 when I overclock ti goes to 950-840 why does it do this it also brings my mhash down to 300 when I overclock and at stock I get 360. My temp is 75c so idk why it would be doing this using Sapphire Trixx!

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Jack of Diamonds
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July 14, 2011, 01:13:36 PM
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AMD introduced PowerTune a few months back in their drivers.

Go to Catalyst control center, write 'overdrive' in the search field and set the Powertune slider to +20 if you don't want PT to be enabled at all.

At the default setting it will attempt to save energy and optimize
performance based on the GPU load by changing the clock frequency up and down.

(Bad for mining because you will want the GPU to be always at full load and frequency, good for gaming)

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Trini8ed
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July 14, 2011, 10:17:12 PM
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I don't want to enable AMD Overdrive shitty overclocked tool always will be It's not even enabled so why is it doing this I want my clock to stay at one frequency...

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July 15, 2011, 04:57:52 AM
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I don't want to enable AMD Overdrive shitty overclocked tool always will be It's not even enabled so why is it doing this I want my clock to stay at one frequency...

I don't think you read the post.. If you want your 69xx series GPU to stay at one frequency, you have to disable PowerTune in AMD overdrive.
It's enabled by default at the driver level.

You don't have to overclock anything.

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Trini8ed
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July 16, 2011, 02:48:46 AM
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How do you disable powertune?

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July 16, 2011, 04:09:30 AM
 #6

How do you disable powertune?

You know, I read this post about it the other day. Here's the link on how to disable powertune:
https://forum.bitcoin.org/index.php?topic=28720.msg362532#msg362532

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dudel42
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July 18, 2011, 02:42:42 PM
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how would one disable powertune in linux console (ssh) only?
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July 18, 2011, 06:38:40 PM
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how would one disable powertune in linux console (ssh) only?
There's a forum post here, with code:
https://forum.bitcoin.org/index.php?topic=8384.msg124095#msg124095

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July 19, 2011, 09:21:26 AM
 #9

thanks that really helped my 6970s!
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