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How to disable SpeedStep for an Intel Core i7 processor?

Fresh5 days ago
Mar 15, 202645862 views
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Problem

I'm taking performance measurements of several bits of code. How can I disable SpeedStep on my Core i7 CPU so that the CPU clock speed is constant? I'm not trying to overclock here, and since SpeedStep only throttles up when it's safe (given the CPU temperature) to do so, I expect turning off Speed…

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Fix for: How to disable SpeedStep for an Intel Core i7 processor?

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This will vary from board to board, but there should be an explicit BIOS option for "Intel SpeedStep" or "EIST" that you can disable. EDIT: Also, I believe you have it backwards. SpeedStep is responsible for downthrottling, not upthrottling; you'll …

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