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    Does FSB have to match system bus?

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by Umberto V., Oct 6, 2007.

  1. Umberto V.

    Umberto V. Notebook Consultant

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    my notebook is going through an upgrade soon.

    I've decided to buy the fastest processor my 855GME chipset will support, the Pentium M 740 (1.73ghz)

    however, something worries me. my chipset system bus runs at 400mhz, while the front side bus (FSB) of the processor runs at 533...is that a problem? do they have to match to work?
     
    Umberto V., Oct 6, 2007
    #1
  2. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    The system bus (for memory, etc) can run at a different speed than the FSB (which is the link to the CPU). For example, Santa Rosa has 800MHz FSB but only supports 667MHz DDR2 RAM.

    John
     
    John Ratsey, Oct 6, 2007
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  3. frazell

    frazell Notebook Deity

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    How can the Front Side Bus operate at a different speed than the system bus? They are one in the same!

    http://www.webopedia.com/TERM/s/system_bus.html
     
    frazell, Oct 6, 2007
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  4. Thomas

    Thomas McLovin

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    That article^^ doesn't say anything about memory speed.
    The System bus(memory speed) can be different then the front-side bus.
     
    Thomas, Oct 6, 2007
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  5. Umberto V.

    Umberto V. Notebook Consultant

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    so its safe to pick the 740...
     
    Umberto V., Oct 6, 2007
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  6. Thomas

    Thomas McLovin

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    Yes, it is Good luck!
     
    Thomas, Oct 6, 2007
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  7. powerpack

    powerpack Notebook Prophet

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    It is already running like that so you are not changing so what is the concern? Here is a link to your stats, Link. I would not expect much difference in performance.
     
    powerpack, Oct 6, 2007
    #7