What is the difference between 11" and 13" Processor

Discussion in 'MacBook Air' started by adamtj11, Jan 17, 2012.

  1. adamtj11 macrumors 6502

    Joined:
    Feb 26, 2011
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    Belfast
    #1
    I know the processor in both is the i5 but the 13" Air has a slighty different model, can't find this anywhere but what is the actual difference(I know the clock speed is 1.6 vs 1.7) between the 2?
     
  2. gentlefury macrumors 68030

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    Jul 21, 2011
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    Los Angeles, CA
    #2
    You answered your own question. 1.6ghz vs 1.7ghz....so basically, no difference.
     
  3. jeremyshaw macrumors 6502

    Joined:
    Oct 29, 2011
    #3
    Technically, the max turbo clocks of the base 13 are 2.7 and 2.4 (single/dual), while the base 11 are 2.3 and 2.1 (single/dual). The IGP of the 13 also turbos to 1200MHz, about 50MHz faster.

    That's not going to make much of an actual performance difference in everyday use, however. Imperceptable while playing a game, and only noticeable (even so, not by much) when performaning a taxing task (i.e, rendering videos).
     
  4. adamtj11 thread starter macrumors 6502

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    Feb 26, 2011
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    Belfast
    #4
    (11") 1.6 GHz (i5-2467M) dual-core Intel Core i5 with 3 MB shared L3 cache
    (13") 1.7 GHz (i5-2557M) dual-core Intel Core i5 with 3 MB shared L3 cache

    They are different models though that is what I meant.

    ----------

    Ah makes sense, thanks for the reply. I just moved from the 11" base to the 13" base and the performance difference is quite high(probably the 2 vs 4gb of Ram) , just wondering if there was a big difference when I seen the different models.
     
  5. paulrbeers macrumors 68040

    Joined:
    Dec 17, 2009
    #5
    Anandtech reported that the Base 11" processor (the i5 1.6ghz) was 25% slower than the 11" ultimate processor (the i7 1.8ghz). Further reported that the base 13" processor (i5 1.7ghz) was only 10% slower than the 13" ultimate processor (the same i7 1.8ghz in the ultimate 11). Using these basic figures, the Base 13" processor is roughly 15-20% faster than the Base 11". With that said, you are probably feeling the affects of having 4GB of RAM vs 2GB of RAM in day to day operations.
     
  6. pgiguere1 macrumors 68020

    pgiguere1

    Joined:
    May 28, 2009
    Location:
    Montreal, Canada
    #6
    Yeah, that would be the RAM. There's now a bigger difference between 2GB and 4GB with Lion. The .1 GHz CPU difference is almost unnoticeable though.
     
  7. gentlefury macrumors 68030

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    Jul 21, 2011
    Location:
    Los Angeles, CA
    #7
    Im still trying to figure out why people started calling it "ultimate"...I have never seen anything from apple referring to anything as Ultimate....nor can you search the Apple store and find anything as Ultimate. Microsoft uses that word in its product...not apple.
     
  8. KPOM macrumors G5

    Joined:
    Oct 23, 2010
    #8
    Since the difference in the turbo boost is 400MHz with both cores running, it is more noticeable than it appears based on the base speeds. That's why the jump to an i7 boosts CPU benchmarks by about 25% on the 11" and only about 10% on the 13".
     
  9. jeremyshaw macrumors 6502

    Joined:
    Oct 29, 2011
    #9
    Just easier, and now common lingua franca, I'd guess.
     

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