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Thread: question about FSB... 133? 266? confused...




  1. #1
    Join Date
    Jan 2005
    Location
    Montgomery, AL
    Posts
    11

    Default question about FSB... 133? 266? confused...

    O.K. I have another question.

    This is my mobo
    This is my cpu

    The mobo specs say max FSB 200/266/333
    The cpu specs say FSB 266mhz
    in bios, it says FSB 133
    default cpu multi is 13.5 (OC to 15.0 as stated in sig)
    memory setting is at 125% (bringing it to 333mhz as stated in sig)

    shouldn't i be able to set the FSB to 266, and lower the multiplier as well as the memory speed, etc.? Or is there another equation or something that i'm missing that is the reason why the bios settings have it at 133? i'm confused about this. it seems so logically simple, yet i don't want to assume things and end up melting my hardware

    Any help would be VERY appreciated!
    3dmark03... 160 (BAAAAHAHAHAHA!!!!)

    AMD xp 2200+ OC'ed to 2400+ (2.0ghz)
    Epox EP-8RDA
    1x512 PC3200 & 1x256 PC2700
    ^both @ 333mhz 2.5 2 2 6
    geforce4 mx420 (radeon 9800pro gettin' fixed)
    WD 40GB IDE
    Toshiba 16x DVD-ROM
    Memorex 16x Dual Layer DVD-/+RW

    newb to OC'ing, but i'm learning lots!

  2. #2
    Join Date
    Oct 2004
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    Default Re: question about FSB... 133? 266? confused...

    133mhz is the base fsb speed. 266 being the effective speed (DDR, double data rate). Im intrigued as to how you unlocked the cpu multiplier (im guessing its a early model athlon xp that could be unlocked simply by connecting bridges)

  3. #3
    Join Date
    Jan 2005
    Location
    Montgomery, AL
    Posts
    11

    Default Re: question about FSB... 133? 266? confused...

    actually... i'm a little confused myself. i read about the unlocking procedures in this article and I was planning to go home and tinker with the FSB and not be able to touch the multi. but lo and behold, it wasn't even locked. i wonder if this is a feature of my mobo? i don't know... but this i do know: i bought the cpu and mobo a year and a half ago (retail... in the box) and haven't messed with it at all. strange, huh? oh well

    anyway, so what you are saying is that the FSB is doubled as well as the speed of the memory? i understand how the memory speed is based of the FSB. on my mobo, there is a percentage that i set to 125% (making effective mem speed 166 or DDR333)

    by the way, my mobo also supports up to PC3200 (or DDR400) so that sure seems like a lot of different speeds.
    Last edited by JoeHeff; 01-13-2005 at 09:21 PM.
    3dmark03... 160 (BAAAAHAHAHAHA!!!!)

    AMD xp 2200+ OC'ed to 2400+ (2.0ghz)
    Epox EP-8RDA
    1x512 PC3200 & 1x256 PC2700
    ^both @ 333mhz 2.5 2 2 6
    geforce4 mx420 (radeon 9800pro gettin' fixed)
    WD 40GB IDE
    Toshiba 16x DVD-ROM
    Memorex 16x Dual Layer DVD-/+RW

    newb to OC'ing, but i'm learning lots!

  4. #4
    Join Date
    Oct 2004
    Location
    _
    Posts
    349

    Default Re: question about FSB... 133? 266? confused...

    Memory and FSB can run independently of each other, although setting the memory too high isnt of much benefit, because of the synchronisation time required. Its fine how you've set it, though, seeing as you also raised the multiplier. Because you have an unlocked multiplier there are a few more possibilities open to you when overclocking. You have a good board, just make sure your components are up to the job and you have good cooling. Make sure the PCI and AGP bus are locked before raising fsb, or you'll have problems very quickly.

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