Inside the MacBook Pro Retina-display
Summary: The most stunning display to ever be attached to the lid of a notebook, but if you break it, replacing it is going to be expensive.
The Retina display on Apple's next-generation MacBook Pro may well be the most stunning display to ever be attached to the lid of a notebook. But if you break it, replacing it is going to be expensive.
Repair specialists iFixit have carried out a full teardown on the Retina display panel. While there's no doubt that it is a marvel of modern engineering, it comes at a price.

Apple has managed to pack five times as many pixels into this panel compared to the older standard-display MacBook Pro notebooks, while still managing to shave a fraction of a millimeter off the thickness. To do this Apple has had to do away with the front glass on the panel -- which has the advantage of cutting down glare -- and used the aluminum case itself as the frame for the LCD panel.
This has essentially turned the notebook lid into a single, non-repairable unit. If you break the display, or if anything inside the panel dies -- and both of these things happen more often than you'd like to believe -- then the entire panel has to be replaced because the display is too fragile to be removed or handled outside of the frame.
Even the experts at iFixit, who are used to removing and handling fragile screens, managed to break the Retina display when attempting to remove it.

You'll also want to take care of those screen hinges. Apple has routed cables through the center of the hinges and not offered any means to remove them. This means that in the event of breakage, you'll have to replace the cables and hinges as a single unit.
This might seem like I'm being picky, but this sort of thing not only adds to the cost of replacement parts, it makes the repair itself more difficult and costly.

I don't normally recommend taking out a warranty, but given the complexity of this screen, combined with the inherent vulnerability of notebook screens, I would seriously consider taking one out if I were to buy a Retina-display MacBook Pro.
I'd hate to have to pay for a replacement panel out of my own pocket.
Related:
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- WWDC: The Mac Pro isn't dead - yet
- Why Apple dumped the 17-inch MacBook Pro
- Apple granted MacBook Air design patent; problems ahead for Ultrabook makers?
- Possible iPhone 5 chassis appears on video
- Why chip names tell us very little about the iPhone 5
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- iPhone 5 could feature a "Retina display killer" screen
- Apple's Tim Cook appears to ‘rules out' iPhone 5 with 4-inch screen
- Reuters: iPhone 5 to have 4-inch screen
- WSJ: iPhone 5 getting 4-inch+ screen
- Best earphones for your iPhone and iPad
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Talkback
Ouch!
I wonder if we'll see a "will it blend?" on the new MBP+R ?
MacBookPro
Since Apple is slowly ditching desktops,
Don't tell me the aluminum casing channels heat, it doesn't - because the chassis is not secured to the CPU with a fine coating of thermal grease to bridge the microscopic gaps between both elements. If there's no direct connection then it acts as a container. And plastic is not as good an insulator as metal, which is partly why most cheap plastic laptops don't fry your goolies when you're doing video editing on them...
Style over substance; the 2012 MBP's added grille vents and funky fans have not addressed the problem to where it will, under load, not get hotter than the $1300 plastic Windows PC...
At least, unlike the 2011 model, the PSU (95w) is large enough to handle what the CPU needs so it won't throttle because of voltage concerns. It might if it gets too hot, but not due to lack of the power requirement...
In short, figure out your needs, do your research, understand basic electronics and their lifespan under the conditions needed, and see if you can afford a replacement after x years, with or without an extended warranty...
Portable does not mean comfortable
I suspect that the perceivable heat will be similar to that of the existing MacbookPros. You have it backwards, by the way. Metal is a much poorer insulator and a much better conductor of heat. That's why the aluminum gets so hot on the MacBook lines. Also, I've had many plastic laptops get extremely hot on the bottom during normal use, and much more so during high CPU/GPU intensive tasks. The Dell Vostro I'm writing this on is a good example as is the Dell Inspiron netbook I have at home as well as a few HP portables I have used recently.
This is exactly why Apple and Dell and HP started calling them 'notebooks' or 'portables' rather than 'laptops'. Apple has been doing that since at least 2001, and I first noticed Dell doing it since 2002. All manufacturers now include statements that you should ONLY use these machines on hard, level surfaces because they get hot.
Pretty good
The hottest I've gotten it was streaming an H264 video. The fan is more white-noise-ish than previous fans, so a bit harder to perceive.
So from my perspective, the ducting, asymmetrical fans, more efficient CPU, and auto-switching of Intel/Nvidia graphics based on demand all control heat noticeably better. (And in a smaller package.)
it runs cool
Time for a physics lesson
You don't own one, I do
The New Macbook Pro with Retina Display Has Problems
http://www.facebook.com/pages/Apple-Please-Recall-Retina-Macbook-Pros-with-LG-Displays/515441551804955
This has been my experience so far, as well as that of many others.
Very disappointing.
Extended warranties
Why don't you try this?
Apple users are used to this..
Shut up, troll
Don't buy Apple Care
4.1 Hardware Service. The Plan does not apply to:
(i) Installation, removal or disposal of the Covered Equipment, or the provision of
equipment while the Covered Equipment is being serviced;
(ii) Damage caused by (a) a product that is not the Covered Equipment (b) accident,
abuse, misuse, liquid contact, fire, earthquake or other external cause, (c) operating
the Covered Equipment outside the permitted or intended uses described by the
manufacturer, or (d) service (including upgrades and expansions) performed by
anyone who is not a representative of Apple or an Apple Authorized Service Provider
(???AASP???);
(iii) Covered Equipment with a serial number that has been altered, defaced or
removed, or has been modified to alter its functionality or capability without the
written permission of the manufacturer;
(iv) Covered Equipment that has been lost or stolen. This Plan only covers Covered
Equipment that is returned to Apple in its entirety;
(v) Cosmetic damage to the Covered Equipment including but not limited to
scratches, dents and broken plastic on ports;
(vi) Consumable parts, such as batteries, except in respect of battery coverage
under APP for iPod or unless failure has occurred due to a defect in materials and
workmanship;
(vii) Preventative maintenance on the Covered Equipment; or
(viii) Defects caused by normal wear and tear or otherwise due to normal aging of
the product.
As opposed to?
New Macbook Pro with Retina Display: Very Disappointing
http://www.facebook.com/pages/Apple-Please-Recall-Retina-Macbook-Pros-with-LG-Displays/515441551804955
...has been my experience so far.
I am not impressed.