Different Penryn processors??

Discussion in 'MacBook Pro' started by taibien86, Feb 26, 2008.

  1. taibien86 macrumors member

    Joined:
    Dec 19, 2007
    #1
    can you explain the difference in the 2.4gHz and 2.5gHz processors?
    are both the 2.5gHz and the 2.6gHz 6MB?
     
  2. G.I. Joe macrumors regular

    G.I. Joe

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    Jan 3, 2008
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    Portugal
    #2
    Besides the obvious mhz difference there's also the cache. 2.4GHz cpu has 3Mb L2. The 2.5GHz, 2.6GHz models have 6Mb cache L2.
     
  3. taibien86 thread starter macrumors member

    Joined:
    Dec 19, 2007
    #3
    i dont know what that means...
     
  4. G.I. Joe macrumors regular

    G.I. Joe

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    #4
    Let's put it this way:

    A 2.6GHz cpu is faster than a 2.5GHz cpu which is faster than 2.4GHz cpu.

    There more GHz you have, more speed you get. Like mph.

    The cpu cache is like a much much faster RAM (system memory), it's also closer to the cpu and more expensive therefore you get less cache.

    This means the more cache you have the better.

    * This was a rough explanation, but I think you understand this way. *
     
  5. macphwoar macrumors newbie

    Joined:
    Feb 11, 2008
    #5
    That means increase in speed is much more noticeable when you choose 2.5GHz over 2.4GHz THAN when you choose 2.6GHz over 2.5GHz.
    between 2.4 and 2.5 there's 3MB on-chip memory difference BUT
    between 2.5 and 2.6 there's NO on-chip memory difference.

    L2 cache is a type of memory that's on the processor itself that makes the processing of the processes faster for the processor :p. so the bigger is always the better when it comes to L2 cache.

    wikipedia always helps if you're into more details
     
  6. signaturez macrumors member

    Joined:
    Feb 22, 2008
    #6
    Have a question about the L2 Cache

    Why the new Macbook has 1mb lower L2 cache than the previous Santa Rosa ?

    is it no matter of lower L2 cache, the new Macbook still achieves higher speed in overall performance in all aspects?
     
  7. G.I. Joe macrumors regular

    G.I. Joe

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    #7

    Intel decided to cut 1 MB of it. Apple has nothing to do with it. I don't know any benchmarks about the new processors. Can't help with that. But common sense tells me overall performance was not hurt.
     

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