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Gonky
May 8, 2011, 05:08 AM
I remember hearing murmurings about this when the machines were announced but despite a bit of Google-fu action still can't find out the answer. Does anybody know? I understand that in theory the faster processor could require more power so the battery goes down quicker, but in reality is this the case?

Cheers :)



TrollToddington
May 8, 2011, 09:31 AM
yes, as is the case with the 11" ultimate.

http://www.anandtech.com/show/4000/apples-11inch-upgraded-macbook-air-review-do-16ghz-and-4gb-make-a-difference/3

Anand reviews the 11" but if I were to make an educated guess I'd say the same applies to the 13", too

Onimusha370
May 8, 2011, 10:42 AM
there is a difference, but the improvement in clock speed outweighs the slight battery life decrease :)

Ridley
May 9, 2011, 09:48 AM
there is a difference, but the improvement in clock speed outweighs the slight battery life decrease :)

I disagree. Clock speed has much less to do with performance than people think. Its not like a 2 Ghz chip is twice as fast as a 1 Ghz chip. Its not 1:1, not even close. I'd recommend the slower processor and 4 Gigs RAM as the best compromise between performance and battery.

Gonky
May 9, 2011, 10:29 AM
I disagree. Clock speed has much less to do with performance than people think. Its not like a 2 Ghz chip is twice as fast as a 1 Ghz chip. Its not 1:1, not even close. I'd recommend the slower processor and 4 Gigs RAM as the best compromise between performance and battery.
Aye, this was what I was kind of expecting and hoping to hear. It's odd that there isn't a comparison out there. I currently have a max 11.6" model but am starting to find the screen a little too small for my needs, I have heard that the 2.13ghz 13" model is a little louder then the 1.86ghz equivalent. Do you think there could be any truth to that?

AppleScruff1
May 9, 2011, 10:33 AM
I disagree. Clock speed has much less to do with performance than people think. Its not like a 2 Ghz chip is twice as fast as a 1 Ghz chip. Its not 1:1, not even close. I'd recommend the slower processor and 4 Gigs RAM as the best compromise between performance and battery.

Same chip model, a 1GHz difference in speed would be quite noticeable in many tasks.

entatlrg
May 9, 2011, 12:21 PM
Aye, this was what I was kind of expecting and hoping to hear. It's odd that there isn't a comparison out there. I currently have a max 11.6" model but am starting to find the screen a little too small for my needs, I have heard that the 2.13ghz 13" model is a little louder then the 1.86ghz equivalent. Do you think there could be any truth to that?

It's possible because when I use Coolbook to under volt the fans slow down and aren't as loud.

I'd buy the 2.13 and use Coolbook for the few times the fans do get loud, for example watching video.

Exana
May 9, 2011, 06:17 PM
yes, as is the case with the 11" ultimate.

http://www.anandtech.com/show/4000/apples-11inch-upgraded-macbook-air-review-do-16ghz-and-4gb-make-a-difference/3

Anand reviews the 11" but if I were to make an educated guess I'd say the same applies to the 13", too

In this review it's not only a question of CPU Clock :
Core 2 Duo 1.4 GHz vs 1.6 GHz 2GB vs 4GB 64GB vs 128GB

Gonky
May 19, 2011, 02:36 PM
In this review it's not only a question of CPU Clock :
Core 2 Duo 1.4 GHz vs 1.6 GHz 2GB vs 4GB 64GB vs 128GB
Would RAM & SSD capacity really effect the battery life?

Xgm541
May 19, 2011, 02:44 PM
Would RAM & SSD capacity really effect the battery life?

technically yes because the motherboard needs to send voltage to those unused ram blocks but in the real world, this is a very small difference.