OT: AMD Cool'n'Quiet and Intel Speedstep

Discussion in 'Internet Explorer' started by RJK, Sep 20, 2008.

  1. RJK

    RJK Guest

    Just got around to further monitoring my PC's with a mains electricity "Plug
    in Mains Power and Energy Monitor",
    (with a "plug in" mains power monitor similar to
    http://www.maplin.co.uk/Module.aspx?ModuleNo=38343 - can't find the "TCH"
    brand one that I own but, have tested it with calibrated meter and it's very
    accurate - amazing what's coming out of China these days).

    ....and the results IMhumbleO are rather interesting !
    My 2nd PC which has recently been having money and parts lavished on it,
    with a view to one day swapping it into the position of my main PC, is using
    79 watts whilst idling - e.g writing this post, (that includes 17" LCD
    monitor btw). And whilst running the benchmark function in "Hot CPU Tester
    Lite," (which pushes the machine to run full speed for the duration of the
    benchmark tests), shows that it's pulling around double the current - and
    consuming 150 - 160 watts.

    ....hardware in that box is
    Seasonic 380w SII psu
    Asrock ALiveNF6G-VSTA motherbaord
    Athlon 64 x2 6000 Windsor (2x3.0ghz 2x1mb L2 cache) CPU
    Nvidia 7300LE pci-e x16 graphics card
    2 x PC2-5300 Kingston 512mb's RAM, ...must get around to fitting PC2-6400 !
    2 x 80gb Seagate hard disks
    1 x dvd rewriter
    3 1/[email protected] card reader bay
    120mm Arctic Cooling case rear fan, 92mm case front fan, 92mm fan on Arctic
    Cooling pro 64 cpu cooler, Zalman VF700-AlCu 'fan'

    My "old" "main" PC reads 142-144watts at idle - cpu at 2396.0 mhz,
    multiplier at x12, and when running the benchmark test, (as above),
    166-168watts cpu at 3194.6 mhz multiplier at x16.
    (APC 650 | Belkin F5C100u | Linksys WAG354G | and a few small consumption
    devices are also on that supply but, for the reasons of these ramblings are
    not relevant).

    Hardware in that is:-
    Seasonic 430w SII psu | Asrock Conroe 865pe | D935 | 4 x 512 Corsair |
    2x80gb + 1x160gb Seagate hd's | 2 optical drives cd rw, dvd rw | floppy
    drive | card reader bay | 5 fans | Nvidia AGP 6200 graphics card

    So, Intel Speedstep on my old D935 | Conroe 865pe is only saving me 24watts
    whilst it's at minimal load,
    and the AMD Cool'n'Quiet technology is saving me around 76 watts whilst that
    machine is not under heavy cpu load !!

    SO THERE you are ! ...the moral of this story, is, IF you have a reasonably
    recent AMD based machine, make sure that you have "Cool'n'Quiet" enabled in
    the bios, and for XP platforms at least, make sure you install the necessary
    AMD cpu optimization ...Cool'n'Quiet driver/s etc. :)
    Intel Speedstep AFAIAA doesn't require any drivers to be installed.

    regards, Richard
    RJK, Sep 20, 2008
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