What is the difference between 11" and 13" Processor

adamtj11

macrumors 6502
Original poster
Feb 26, 2011
408
17
Belfast
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?
 

gentlefury

macrumors 68030
Jul 21, 2011
2,848
0
Los Angeles, CA
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?
You answered your own question. 1.6ghz vs 1.7ghz....so basically, no difference.
 

jeremyshaw

macrumors 6502
Oct 29, 2011
340
0
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).
 

adamtj11

macrumors 6502
Original poster
Feb 26, 2011
408
17
Belfast
You answered your own question. 1.6ghz vs 1.7ghz....so basically, no difference.
(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.

----------

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).
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.
 

paulrbeers

macrumors 68040
Dec 17, 2009
3,961
120
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.
 

pgiguere1

macrumors 68020
May 28, 2009
2,157
1,082
Montreal, Canada
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.
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.
 

gentlefury

macrumors 68030
Jul 21, 2011
2,848
0
Los Angeles, CA
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.
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.
 

KPOM

macrumors P6
Oct 23, 2010
15,313
3,700
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.
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".
 

jeremyshaw

macrumors 6502
Oct 29, 2011
340
0
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.
Just easier, and now common lingua franca, I'd guess.
 
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