K7S5A Pro with XP1800 comes up as 1150Mhz not 1533Mhz

Discussion in 'ECS' started by Ariel, Sep 19, 2003.

  1. Ariel

    Ariel Guest

    I have PC100 SDRAM and the only setting that works in the CPU page on
    the BIOS is CPU Speed/DRAM Frequency = 100/100 Mhz. If I change it to
    something else the computer won't boot and I have to clear the CMOS.
    The BIOS display at boot up only shows 1150Mhz, shouldn't it be
    Ariel, Sep 19, 2003
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  2. Ariel

    Mike G Guest

    The XP1800+ is meant to run on a 133MHz FSB, with a fixed multiplier
    of 11.5 (giving a clock speed of 1533MHz). It follows that if you run
    it on a 100MHz FSB, the clock speed will only be 1150MHz.

    Some of the overclocking BIOSes - HoneyX, etc - allow you to set
    133/100 MHz (i.e. 133MHz FSB, 100MHz RAM), but this may be unreliable
    - it's always best to run the RAM at the same speed as the CPU.

    Ideally you should upgrade the RAM to something that's happy on a
    133MHz bus - preferably PC2100 or faster DDR. Then, you should be able
    to use the CPU at its proper speed without problems.
    Mike G, Sep 19, 2003
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  3. Ariel

    Salokyn Guest

    right, you can't have a FSB faster than the RAM

    CPU / RAM
    100 100
    100 133
    133 133
    Salokyn, Sep 19, 2003
  4. Ariel

    Buffalo Guest

    I believe even the regular ECS BIOS gives you that option. Not sure if it
    would work well though.

    "Salokyn" > wrote in message news:3f6b2fd8$0$10438$...
    Buffalo, Sep 19, 2003
  5. Ariel

    Ariel Guest

    Thanks for the info & help, I appreciate it!

    Ariel, Sep 20, 2003
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