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My MacBook has a dual-core processor with hyperthreading, so 4 software cores. Seems like the maximum CPU usage would be 400%? I missed the screenshot, but today kernel_task shot up to 970% CPU for a split second. How is that possible?

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    What Macbook and cpu do you have?
    – mmmmmm
    Commented Aug 3, 2018 at 10:13

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Open Activity Monitor and go to the Window menu. One option under that menu is CPU Usage. Select that and a small window comes up and shows the CPU usage for each core. I think you have 8 cores but this menu item will answer that question.

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    I have a dual-cpu computer and I have 8 software cores.
    – Natsfan
    Commented Aug 2, 2018 at 22:37
  • I have 4 cores.
    – clickbait
    Commented Aug 2, 2018 at 23:01
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    interesting... I don't know why you are seeing 800%///
    – Natsfan
    Commented Aug 2, 2018 at 23:21

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