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I have a new rig with an i5 2500k overclocked to 4.8GHz.

It doesn't have a GPU yet, so I'm going to let it do some Folding at Home. I installed the latest Folding at Home client, but in Task Manager, it only shows one process – and that process never exceeds 25%.

Why is it not using 100% of my CPU power? I have four cores available. I made sure that 'Do not lock cores to specific CPU' was ticked in the advanced configuration of the client.

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Task manager shows it is using all 4 cores but overall the limit is 25%. – baobeithebaobei Mar 9 '12 at 12:06
Just because a process is set to run on all cores (keyword affinity), doesn't mean it'll be able utilize all of them. – Oliver Salzburg Mar 9 '12 at 12:53

Did you download the SMP High Performance client? You are probably running the old uni-client which is only singlethreaded. You should use version 6.34 or even the version 7 beta client.

See this guide for a proper installation and use of the version 7 client. Start at "QuickStart" there is also the download link.

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Just tried to install v6.41 but it won't let me run it as it says I have no gpu in my system. I cannot for the life of me see any link to a v7 beta. – baobeithebaobei Mar 9 '12 at 12:29
@baobeithebaobei oops, my fault sry, it is the 6.34 for CPU. I will add a link to v7 download. – inf Mar 9 '12 at 12:50

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