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    SuperPi and CPU Useage

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by speedy41, Nov 12, 2006.

  1. speedy41

    speedy41 Notebook Enthusiast

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    Hi,

    I am just wondering about the CPU usage (displayed on the windows task manager).

    When I run superpi, my CPU useage is only at 50-51%. I thought it would be 100%.

    Is that normal?

    Thanks!
     
    speedy41, Nov 12, 2006
    #1
  2. Mark

    Mark Desktop Debugger

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    I think it would be a result of your dual core processor, I know that is how it worked for old P4's with hyper threading, not sure about dual core though. I have the same thing happen actually.
     
    Mark, Nov 12, 2006
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  3. Charles P. Jefferies

    Charles P. Jefferies Lead Moderator Super Moderator

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    It's normal. SuperPI is not multithreaded, so it will only utilize one of the cores of your processor.
     
    Charles P. Jefferies, Nov 12, 2006
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  4. speedy41

    speedy41 Notebook Enthusiast

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    I kind of figured it would be because of the dual cores.

    Thanks for your replies!
     
    speedy41, Nov 12, 2006
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  5. madroxinide

    madroxinide Notebook Deity

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    does this mean to get a accurate time you would cut the time shown in half?
     
    madroxinide, Nov 12, 2006
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  6. Charles P. Jefferies

    Charles P. Jefferies Lead Moderator Super Moderator

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    No, just use what time it gives you.
     
    Charles P. Jefferies, Nov 12, 2006
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  7. Gophn

    Gophn NBR Resident Assistant

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    I would recommend using 3DMark06's CPU Test to get an accurate score to compare with others.

    3DMark06 is multi-threaded, so its more reliable as a benchmark nowadays with dual core systems and all.
     
    Gophn, Nov 12, 2006
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  8. Jalf

    Jalf Comrade Santa

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    Except it measures.... 3d performance, not raw CPU performance. :)
     
    Jalf, Nov 13, 2006
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  9. Gophn

    Gophn NBR Resident Assistant

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    not true, you can just run the CPU tests only if you want.
     
    Gophn, Nov 13, 2006
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  10. cream626

    cream626 Notebook Guru NBR Reviewer

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    I thought the free version doesn't include the CPU test only. Isn't that only for the purchased version?
     
    cream626, Nov 13, 2006
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  11. Jalf

    Jalf Comrade Santa

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    isn't the CPU test just software-based 3d rendering? That's likely to give quite different results from superpi (although no more or less accurate. Both are synthetic and basically useless benchmarks)
     
    Jalf, Nov 13, 2006
    #11