TiBOOK: L3 or L2????

Discussion in 'Mac Help/Tips' started by sphereboy, May 15, 2002.

  1. sphereboy macrumors 6502

    sphereboy

    Joined:
    May 10, 2002
    Location:
    MIAMI.FL.USA
    #1
    I was on the apple web page again staring at the TiBook waiting for mine to arrive while I noticed something strange:

    It says in the specs when you click on BUY:

    800MHz PowerPC G4
    1MB L3 & 256K L2 cache

    Why does it say 1MB L3 "AND" 256K L2 cache?

    Why are there two cache thingies??
     
  2. cb911 macrumors 601

    cb911

    Joined:
    Mar 12, 2002
    Location:
    BrisVegas, Australia
    #2
    well one is 1MB and the other is 512k. if there are 2 caches it will be alot better.
     
  3. sphereboy thread starter macrumors 6502

    sphereboy

    Joined:
    May 10, 2002
    Location:
    MIAMI.FL.USA
  4. cb911 macrumors 601

    cb911

    Joined:
    Mar 12, 2002
    Location:
    BrisVegas, Australia
    #4
    sorry, i don't really know what the caches are for. of the limited amount of info i know about caches, here is what i can tell you: i think that the caches store data that is coming from the processer to RAM and/or visa versa. i'm not really sure about any of this but i think that when one cache is full the data goes to the next cache.
    i'm not sure about this either, but i think that the caches are refreshed at every clock cycle. hope this helped.

    here's a good site to have a look at if you're wondering about hardware and how a computer works in general: Ars Technica
    sorry i didn't have time to check if they had anythng on caches, but you should find something interesting there.:)
     
  5. King Cobra macrumors 603

    Joined:
    Mar 2, 2002
    #5
  6. King Cobra macrumors 603

    Joined:
    Mar 2, 2002
    #6
    To correct myself, I meant L3 cache. That dang shift key...

    You know, this reminds me of an article for why PCs runs slowly. If I am not mistaken, I think that because PCs have such a small L1 cache (maybe only 8k) small chunks of data can be carried about the computer. I do not have that source on me at the moment. I know that it is a very long web page.
    __________________

    Any time is a great time for iPod.
     
  7. sphereboy thread starter macrumors 6502

    sphereboy

    Joined:
    May 10, 2002
    Location:
    MIAMI.FL.USA
    #7
    ok thanks. I didn't know the tibook would have both L2 and L3..
     

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