Surface pro 4 - clock speed of CPU keeps the same

Anonymous

After updating to windows 10 (1607), I find that the clock speed of the CPU keeps to be 2.92GHz when plugged, and to be 2.47GHz when using battery. My surface pro 4 has a core i5 CPU. It seems strange because the clock speed of CPU should change with the workload in the Task Manager. Does anyone have the same problem?

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Anonymous

Fixed with today's update. Thanks, MS!

NOTE: I had to reboot twice after updating. So if anyone is not seeing the fix try a restart.

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Anonymous

2016-08-28T07:02:18+00:00

Hi Barb,

Thanks for the news! Do you happen to know from your contacts if this problem has an impact on battery life?

There are those who claim that it's just a graphical glitch in the UI which shows the max speed used but does not really reflect the actual CPU utilization.

Any useful feedback is appreciated!
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Anonymous

2016-08-25T17:22:16+00:00

John, Hi,

I'm finding exactly the same.

But on reflection, the clock can't actually be at 3.2 GHz 100% of the time or the fans would be howling.

My suspicion is that this high reported clock speed is a consequence of changes to Windows to accommodate Intel 'Speed Shift', and actual control has been effectively handed from the OS to the CPU.

http://www.anandtech.com/show/9751/examining-intel-skylake-speed-shift-more-responsive-processors
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Barb Bowman 80,805 Reputation points MVP Volunteer Moderator

2016-08-25T16:28:55+00:00

Amen...

>>Hopefully before Redstone 2
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Anonymous

2016-08-25T15:45:08+00:00

Thanks Barb. Hopefully before Redstone 2.
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