Touching the cracks between keys on the rMBP is like touching the inside of a volcano

Trojita

macrumors member
Original poster
Oct 29, 2009
90
7
Damn its hot. This is my first Macbook Pro, are they usually like this? This is with running Ultrafan by the way. It's uncomfortable

I was trying to run the Witcher 1 on Mac OSX ML.
 

GGJstudios

macrumors Westmere
May 16, 2008
44,421
759
Damn its hot. This is my first Macbook Pro, are they usually like this? This is with running Ultrafan by the way. It's uncomfortable

I was trying to run the Witcher 1 on Mac OSX ML.
Yes, it's normal for Apple notebooks to become hot to the touch under heavy workloads.

Apple Portables: Operating temperature
The bottom of your Apple portable may become warm during normal use. If the computer is on your lap and gets uncomfortably warm, remove it from your lap and place it on a stable surface.
 

Dangerous Theory

macrumors 68000
Jul 28, 2011
1,981
28
UK
You touched the inside of a volcano?!?!?!?!?!:eek:
Loads of people have touched the inside of a volcano. It just depends how deep down and close to the magma you touch.

Anyway yeah, the RMBP dissipates a lot of its heat through the top edge between the screen and keyboard, and less on the bottom like previous MBPs. I think it's better this way, since air is freely available.
 

BlazednSleepy

macrumors 6502a
Apr 15, 2012
692
181
This is the way I see it with hot macbook pro, iMacs etc.

Touching the aluminum and knowing it's hot is a good thing. The aluminum is doing what it was used for. Fantastic heat dissipation. It's a giant heat sink absorbing and releasing that heat. When you compare these computers to PC's with plastic bodies and similar specs I guarantee theres an inferno inside body because plastic doesn't do anything with heat. Anand tech pointed that out in the samsung series 7 review and because of it's plastic underbody the computer throttles pretty badly.
 

NewbieCanada

macrumors 68030
Oct 9, 2007
2,574
35
You'll find that if it's elevated slightly, so air flows underneath it as well, it stays much cooler.
 

chaseychasem

macrumors regular
Aug 4, 2012
137
0
Clamshell mode can raise temps a few degrees, but not enough to cause concern. Mac notebooks are designed to operate safely in clamshell mode.
Yeah, just curious about clamshell temp differences between MBP and MBPr due to the impact of design changes.
 

NewbieCanada

macrumors 68030
Oct 9, 2007
2,574
35
I can attest to that.

I recently bought an mStand from rain design and it noticeably cooled down my macbook pro 2012.
mStand rocks. Mine spends all day on one at work and it stays completely comfortable on all surfaces. At home, on a flat surface, it heats up quite quickly.
 

Queen6

macrumors 604
If you are concerned with the temperatures and want to reduce them elevation of the rear of the machine helps, as sitting flat on the desk only reflects the head back to the base of the Mac. You can buy passive aluminium coolers like Rain Designs Mstand or iLap. Most powered coolers are designed for PC notebooks and dont work overly well with Mac`s one cooler that does work efficiently is the Moshi Zefyr 2, as it`s principle of cooling is specifically designed for Apple portables, by blowing the air horizontally across the base of the computer, however don't expect miracles.



Link: Moshi Zefyr 2

You can use software to override Apple`s own cooling algorithm by manually taking control of fan RPM and setting up power profile presets with SMC Fan Control 2.4, or here with UltraFan which allows you stipulate a preset temperature and the software will automatically raise and lower fan RPM`s to keep the system at the predefined temp, which i personally feel is a far more elegant solution, at the end of the day you want to control your system temperature, not your fan rpm`s. For me SMC is now pretty much redundant with the latest release of UltraFan having manual control of the fans, and i am starting to uninstall it from my own Mac`s. SMC FC was a great app, however it`s functionality is no longer frequently updated.

Strictly speaking Apple`s own cooling algorithm works, albeit at sacrifice of increased temps for quieter operation, this has always been the Apple way and is really nothing detrimental to the systems, i have one MBP from 2008 all original barring a recent fan change that has an uptime of over 30K hours. The latest MBP`s need less assistance in remaining cool; for some it`s simply disconcerting the heat generated and transferred to the case, although it`s perfectly normal as the aluminium acts as a heat-sync. i have to deal with elevated ambient temperature so at times a software solution is useful. Apart from the passive cooling the Mstands bring they also offer a very sound ergonomic solution. A passive cooler and UltraFan will maximise the cooling, there is little else you can do short of reducing the ambient temperature or the system load. If I know i am going to push a system i will close all apps that are not essential as this can and does make an impact to system temperature.

High temperature in general is not overly harmful to your systems, what is far more detrimental is thermal stress, when temperatures rapidly fluctuate by significant margins in a short period of time. Anyone striving for longevity should look to minimise rapid fluctuation of temperature.

The old adage still applies; it`s easier to keep a system cool, than cool-down an already hot machine. This being said it`s not strictly necessary, equally it`s nice to know that there are options for reducing temperature.
 
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GGJstudios

macrumors Westmere
May 16, 2008
44,421
759
Realistically no this is the maximum value,
I think your post is quite helpful. I do have one suggestion. If you remove the post by The Great HooD at the beginning, it could avoid confusion by some who mistakenly expect to find that post in the body of this thread.
 

roxxette

macrumors 68000
Aug 9, 2011
1,507
0
Loads of people have touched the inside of a volcano. It just depends how deep down and close to the magma you touch.

Anyway yeah, the RMBP dissipates a lot of its heat through the top edge between the screen and keyboard, and less on the bottom like previous MBPs. I think it's better this way, since air is freely available.
Can you elaborate more about these "how deep down and close you touch" ?
 

thekev

macrumors 604
Aug 5, 2010
6,726
1,852
This is the way I see it with hot macbook pro, iMacs etc.

Touching the aluminum and knowing it's hot is a good thing. The aluminum is doing what it was used for. Fantastic heat dissipation. It's a giant heat sink absorbing and releasing that heat. When you compare these computers to PC's with plastic bodies and similar specs I guarantee theres an inferno inside body because plastic doesn't do anything with heat. Anand tech pointed that out in the samsung series 7 review and because of it's plastic underbody the computer throttles pretty badly.
The aluminum heatsink theory was seemingly debunked before. You really should read more of the Anandtech review. In their comparison the rMBP didn't throttle much if at all while under the same load the 2011 MBP saw its performance drop 20% due to throttling. I doubt either can run at full load for hours. With the mbp you can still drain the battery while plugged into the wall. It allows for a smaller charger, but the things Apple doesn't tell you can be irritating.
 

GGJstudios

macrumors Westmere
May 16, 2008
44,421
759
this does not mention anything about the actual keyboard being too hot to touch.
If the base of the computer gets hot, it takes just a smidgen of common sense to figure out that the keyboard will also get hot, as heat radiates in all directions and heat rises.
 

GGJstudios

macrumors Westmere
May 16, 2008
44,421
759
How would this help on an rMBP where the vents are in the *front*?
The vents aren't in the front. There are intake vents along the sides near the bottom and exhaust vents at the rear, near the hinge. There are no vents on the front or anywhere else.
 

Queen6

macrumors 604
I think your post is quite helpful. I do have one suggestion. If you remove the post by The Great HooD at the beginning, it could avoid confusion by some who mistakenly expect to find that post in the body of this thread.
Thx will do :)

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Very sleek product, but retarded expensive.
I know and they are very difficult to find discounted, it does work as will a strategically placed USB fan it wont be as elegant nor as portable. The Zefyr is built to a very standard much like a Mac being predominately aluminium

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How would this help on an rMBP where the vents are in the *front*?
Vents are in the side towards the front Zefyr blows cold air across the base and sides of the system, elevation increases airflow, higher fan rpm`s draw in a greater volume of air.