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Whackintosh

macrumors 6502
Original poster
Mar 8, 2009
435
14
Montreal, Quebec
Just got a 2018 i5 13", upgrading from a 2013 RMBP, and I'm loving it a ton. At the same time, I'm considering swapping it for a 15" as I'm feeling that the larger screen size would be worth the slightly increased weight, particularly now that the newer design is lighter overall. I don't especially need the GPU, but I wonder if its inclusion would make the 15" models run hotter than their 13" siblings? My 13" barely gets warm and I love it. Also, would the battery life be less on the larger machine?
 

maflynn

macrumors Haswell
May 3, 2009
73,682
43,709
I can't speak for the 13" but my 15" does get hot, I manage this via the Volta app, but it can get toasty. I'm ok with this, since I much prefer the larger screen real estate
 

Whackintosh

macrumors 6502
Original poster
Mar 8, 2009
435
14
Montreal, Quebec
I can't speak for the 13" but my 15" does get hot, I manage this via the Volta app, but it can get toasty. I'm ok with this, since I much prefer the larger screen real estate

Thanks. Does it get warm with light use (web browsing, email, Word etc) or is it only under heavy load?
 

GerritB

macrumors regular
Jul 18, 2018
116
82
Mine was constantly running at 50+ degrees Celsius, which is why I adjusted it with Macs Fan Control to get the fans to speed up earlier and let it settle at idle at about 43-45 with fans at 2900-3200 for both the CPU and GPU. Whether this is hotter than the 13" I'm not sure, but I found it be hotter than I would've liked.
 

bevsb2

Contributor
Nov 23, 2012
4,555
13,913
Thanks. Does it get warm with light use (web browsing, email, Word etc) or is it only under heavy load?

My 15" 2.6, i7, 512 does not even get warm with the light use you describe. It is cool to the touch and I've only heard the fan once, but that is a soft sound and I may miss it in a noisy room. I've had this device since July 15th and it has been perfect in every way so far (but does have the crypt_val error for what that's worth).
 

Chairman.Jobbie

macrumors 6502a
Sep 9, 2011
501
200
The 15" can get hot in my experience. Not under light use im my experience - its at 42 degrees. When I was streaming tv using Google Chrome the fans came on and it was really hot underneath (I think I was charging it as well) - not good but not overly bothered by it. M most of the time it be under light load.

The side bottoms of the laptop are quite sharp when you pick it from flat - I guess part of the venting.
 
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