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MBP i7 vs i5 vs c2d battery life and heat

tim100

macrumors 65816
Original poster
May 25, 2009
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does the 17 run cooler than the 15? how about i5 vs i7 for heat?
 

tim100

macrumors 65816
Original poster
May 25, 2009
1,368
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i think it is important to understand the difference between the macbook lines re heat and battery life. those factors are more important to me than speed for what i do.
 
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C64

macrumors 65816
Sep 3, 2008
1,234
222
The 17" has more space for cooling, so it'll be a bit cooler.
The i7 will run a bit more hot than the i5, so the i5 will be a bit cooler.

Important to note: this is only when you're stressing all the cores. Most of the time 2-3 or your cores will be completely asleep doing nothing, and your MacBook will be cool and dead silent, regardless of the size/CPU. Bottom line: don't worry and buy what you need.
 
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kgeier82

macrumors 65816
Feb 18, 2008
1,013
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The 17" has more space for cooling, so it'll be a bit cooler.
The i7 will run a bit more hot than the i5, so the i5 will be a bit cooler.

Important to note: this is only when you're stressing all the cores. Most of the time 2-3 or your cores will be completely asleep doing nothing, and your MacBook will be cool and dead silent, regardless of the size/CPU. Bottom line: don't worry and buy what you need.

I would say this is pretty accurate, but not 100%. Both i7, i5's have a 35w tdp, and while the i7 should operate at a higher Turbo Boost clock, neither stays there very long.

Out of the 5-10 machines Ive seen of each, there was no correlation between heat and i7, or a cooler i5.

Oh and, only 2 cores for each chip :)
 
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Cptow

macrumors newbie
Jul 15, 2010
18
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I would say this is pretty accurate, but not 100%. Both i7, i5's have a 35w tdp, and while the i7 should operate at a higher Turbo Boost clock, neither stays there very long.

Out of the 5-10 machines Ive seen of each, there was no correlation between heat and i7, or a cooler i5.

Oh and, only 2 cores for each chip :)

Thought quad core?
 
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mark28

macrumors 68000
Jan 29, 2010
1,632
2

I think it's due to the bigger screen that the 2010 13 MBP is so good with battery life. ( and maybe the dedicated GPU doesn't use 0 Watts when it is not activated )

The i5 beats the 2009 15 inch C2D MBP in battery life :p
 
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Meever

macrumors 6502a
Jun 30, 2009
641
28
The i7-620m is a dual core chip. Quad cores have much lower clock speeds.


They also run hot enough to roast a steak on.

...But also smacks around all dual cores on multi core threaded programs and benchmarks.
 
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tim100

macrumors 65816
Original poster
May 25, 2009
1,368
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I think it's due to the bigger screen that the 2010 13 MBP is so good with battery life. ( and maybe the dedicated GPU doesn't use 0 Watts when it is not activated )

The i5 beats the 2009 15 inch C2D MBP in battery life :p

no doubt, i5 gets pretty good battery life.
 
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