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Question about AMD overdrive

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d4NjvRzf   01-01-2008 at 02:21:22 PM

Various people have touted AMD Overdrive for its ability to clock each core individually. Suppose that core 1 is clocked at 3 Ghz while cores 2-4 are at 2.2 Ghz. Does windows automatically prioritize CPU-intensive tasks for the higher-clocked core? In other words, will it use core 1 to run Crysis and 2-4 to run windows explorer rather than the other way around?

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Message edited by d4NjvRzf on 01-01-2008 at 02:23:30 PM
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jt001   01-01-2008 at 03:02:52 PM
- 0 +

I would say Windows is probably not designed for that, due to the fact that AFAIK there hasn't been a chip yet with differently clocked cores. You could always set the affinity of the higher clocked cores to the more demanding app though.

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dragonsprayer   01-02-2008 at 04:45:50 AM
- 0 +

no

windows apps rotate cores

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stealth91   01-02-2008 at 05:13:22 AM
- -1 +

its one of those features you can brag about but doesn't actually add much to performance

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dragonsprayer   01-02-2008 at 05:56:44 AM
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well in the future they may lock it the core?

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superchris7   10-19-2008 at 10:19:27 PM
- 0 +

Does anyone know the answer to this?

In AMD Overdrive, do you set the Advanced Clock Calibration to
Auto
All Cores
or Per Core

If you select All Cores or Per Core, what % do you select? I can't find anything on what these mean. Thanks.

Reply to superchris7
jimmysmitty   10-19-2008 at 11:07:17 PM
- 0 +

d4NjvRzf wrote :

Various people have touted AMD Overdrive for its ability to clock each core individually. Suppose that core 1 is clocked at 3 Ghz while cores 2-4 are at 2.2 Ghz. Does windows automatically prioritize CPU-intensive tasks for the higher-clocked core? In other words, will it use core 1 to run Crysis and 2-4 to run windows explorer rather than the other way around?



Every game that I have played always uses Core 0 (the first core) to run on then if it supports it offloads the others to other cores that are available. Windows XP doesn't but Vista does make use of the other cores. If it sees one core heavily loaded it will offload system processes to other cores. I have seen this when playing any game. My main core is used the most by the game and the rest are used by system processes and other stuff.

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BeakerUK   10-20-2008 at 10:27:23 AM
- 0 +

When I play games, or heavily load the CPU I usually see even usage between the cores. not sure if this is because of the Dual-Core Fix, or the the MS patch that you can apply (I always do). One of my mates reports the same issue with one core taking most of the strain.

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