Frame rate boost with 9800pro by increasing CPU's Vcore - How come?

Discussion in 'Asus' started by Ulf Stahl, Feb 17, 2004.

  1. Ulf Stahl

    Ulf Stahl Guest

    My somewhat overclocked system was/is running stable. No crashes, no
    Mobo A7N8X Deluxe Rev 1.06, Bios 1007, 1 G RAM (2x512 MB Kingston HyperX)
    XP 3000+ @ 2355 MHz, Vcore 1.750 V
    Radeon 9800pro 128 MB @ 441 / 351.
    When I increased the Vcore to 1,775 V (letting everything else unchanged) I
    got a considerable boost in frame rate,
    measured with the FRAPS utility when gaming IL2-FB (OpenGL).
    I had this with Cat 4.1 and now Cat 4.2 drivers.

    Didn't know there was a connection between CPU-Vcore and FPS.
    Can somebody explain this phenomenon, pls?

    Ulf Stahl, Feb 17, 2004
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  2. When I did a mo/bo change here, I experienced something similar - when I
    had dropped the VCore too far (1.40 V in this case, for two 300A
    Celerons), the integer benchmark scores in SiSoft Sandra were reduced by
    about 1/8. At somewhat higher voltage (1.50 V), everything was back to
    normal. My educated guess is that at the low VCore numerous ECC errors
    in the caches occurred, reducing overall performance.

    Stephan Grossklass, Feb 17, 2004
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