• CPU throttling to 0.4 GHz on Surface devices, including the Surface Pro 6 and Surface Book 2

    Posted on August 14, 2019 at 09:29 CDT by • Comment in the Forums

    Thanks to @TechThinkers for pointing me to this article by Mayank Parmar in Windows Latest:

    CPU suddenly slows itself down and drops to 0.4Ghz– below the base level for the chip.

    this issue is not associated with Microsoft’s firmware or software updates

    It could be a bug impacting the thermal management system which slowdowns the clock speeds under heavy thermal loads. The throttling issue was first reported in 2018 on Surface Book and complaints have increased significantly in 2019.

    Mayank points to threads on Reddit, the MS Answers Forum, and the Feedback Hub. The descriptions have an uncanny common thread: They all say that the CPU (measured in the Task Manager) pegs at 0.4 GHz — not 0.3, not 0.5 GHz.

    Have you hit this problem? Is it associated with your machine heating up?

    UPDATE: James Sanders at ZDNet has taken up the topic.

    Hardware
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