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I have Vaio Z-690 laptop, and its processor speed is 2.66 GHz. I don't need too much speed, and I'm OK with 2 GHz or even less. Just for browsing websites it's enough.

I want to slow down my CPU to make it more silent. The fan is a bit noisy now. Is there a way to do this in Windows 7 64-bit?

The Notebook Hardware Control software doesn't run on 64-bit systems. And I don't know what to do. Also, there aren't any BIOS settings.

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up vote 11 down vote accepted

Have you tried using the built-in power options in Windows 7? I think this is achievable by choosing a passive cooling strategy.:

  1. If you hover your mouse over the little power icon in the activity bar, you should see this: Hover

  2. Click "More power options", and this window is shown: More power options

  3. Choose "Change plan settings" to get here:Plan settings

  4. You should find what you're looking for under "Change advanced power settings":Advanced
    The tooltip is from hovering over "Plugged in: Active". If you hover over "On battery: Passive" you see the text Slow the processor before increasing fan speed, which sounds like what you're trying to do.

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thanks a lot for that! –  user337085 Jun 4 '11 at 18:28

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