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"Tapered Edge" Aluminum iMac FAQ

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EveryMac.com's "Tapered Edge" Aluminum iMac Q&A answers questions about the 2012, 2013, 2014 and 2015 Aluminum iMac models that have a sharp tapered edge around the display. Regardless of release date, these systems can be identified collectively by model numbers A1418 and A1419.

Questions range from "What are all the differences between the 'Late 2015' Aluminum iMac models?" to "How do you upgrade the RAM in the 'Tapered Edge' Aluminum iMac systems? Is it even possible? How much RAM does each model actually support?" and everything in between.

Please note that all "Late 2015" iMac models are shipping currently whereas all previous iMac models have been discontinued.

Earlier Aluminum iMac models have flat sides that are approximately an inch thick around the display.

These systems with 20" and 24" screens and a black plastic back are model numbers A1224 and A1225. Those with 21.5" and 27" screens and an aluminum back are model numbers A1311 and A1312.

EveryMac.com offers a separate Aluminum iMac Q&A that covers these earlier iMacs.

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Most Frequently Asked "Tapered Edge" Aluminum iMac Q&As:

How do you upgrade the RAM in the "Tapered Edge" Aluminum iMac models? Is it even possible? What type of RAM do they use? How much RAM does each model actually support?

What are all the differences between the "Late 2015" Aluminum iMac models? Which is best for me?

How do you upgrade the hard drive in the "Tapered Edge" Aluminum iMac models? What type of storage do they support? Is it even possible to upgrade the hard drive? What about the processor?

What are all the differences between the current "Late 2015" Aluminum iMac models and the models replaced?

How can you "force" or "hack" the iMac Retina 4K and iMac Retina 5K models to run at native resolution or otherwise fit more content on screen than by default?

How fast are the "Late 2015" iMac models compared to one another? How fast are the "Late 2015" iMac models compared to the models replaced? How fast are the "Late 2015" iMac models compared to the Mac Pro?

What are all the differences between the discontinued "Late 2014/Mid-2015 Retina 5K" Aluminum iMac models? What are all the differences between these models and the 27-Inch "Late 2013" iMac models replaced?

What are the "pros and cons" of the "Tapered Edge" Aluminum iMac? Is one right for me?

What version of OS X is pre-installed on the "Tapered Edge" Aluminum iMac models?

What type of video processor is provided by the "Tapered Edge" Aluminum iMac systems? Which have dedicated memory? Which have integrated memory?

Software Compatibility Q&As:

What version of OS X is pre-installed on the "Tapered Edge" Aluminum iMac models?

Can the "Tapered Edge" Aluminum iMac run Mac OS X software written for the PowerPC processor?

How do you install software on the "Tapered Edge" Aluminum iMac without an optical drive?

How do you restore the operating system on the "Tapered Edge" Aluminum iMac models?

Can the "Tapered Edge" Aluminum iMac run Windows or Linux?

Comparison & Performance Q&As (Current Models):

What are all the differences between the "Late 2015" Aluminum iMac models? Which is best for me?

What are all the differences between the current "Late 2015" Aluminum iMac models and the models replaced?

How fast are the "Late 2015" iMac models compared to one another? How fast are the "Late 2015" iMac models compared to the models replaced? How fast are the "Late 2015" iMac models compared to the Mac Pro?

Comparison & Performance Q&As (Discontinued Models):

What are all the differences between the "Late 2014/Mid-2015 Retina 5K" Aluminum iMac models? What are all the differences between these models and the 27-Inch "Late 2013" iMac models?

How fast are the "Late 2014/Mid-2015" iMac models compared to one another and the "Late 2013" models? How fast are the "Late 2014/Mid-2015" iMac models compared to the Mac Pro?

What are all the differences between the "Late 2013" Aluminum iMac models?

What are all the differences between the "Late 2013" and entry-level "Mid-2014" Aluminum iMac models?

How much slower is the "Mid-2014" iMac than the "Late 2013" models? Is the cost savings enough to justify the performance decrease?

What are all the differences between the "Late 2013" Aluminum iMac models and the "Late 2012" models that they replaced?

How fast are the "Late 2013" Aluminum iMac models compared to one another? How much faster are the "Late 2013" models than the "Late 2012" models replaced?

What are all the differences between the "Late 2012" Aluminum iMac models?

What are all the differences between the "Late 2012" Aluminum iMac models and the "Mid-2011" models that they replaced?

How fast are the "Late 2012" Aluminum iMac models compared to one another? How much faster are the "Late 2012" models than the "Mid-2011" models replaced?

Upgrades, Expansion & Connectivity Q&As:

How do you upgrade the RAM in the "Tapered Edge" Aluminum iMac models? Is it even possible? What type of RAM do they use? How much RAM does each model actually support?

How do you upgrade the hard drive in the "Tapered Edge" Aluminum iMac models? What type of storage do they support? Is it even possible to upgrade the hard drive? What about the processor?

What type of video processor is provided by the "Tapered Edge" Aluminum iMac systems? Which have dedicated memory? Which have integrated memory?

What is "Thunderbolt"? Is it an industry standard? What advantages does it offer? Are there any disadvantages?

What is 802.11n? How is it different from 802.11b, 802.11g, and 802.11a?

Video & Display Q&As:

What are the differences between the displays used in the "Tapered Edge" Aluminum iMac models?

What type of video processor is provided by the "Tapered Edge" Aluminum iMac systems? Which have dedicated memory? Which have integrated memory? Is it upgradable?

Do the "Tapered Edge" Aluminum iMac models support multiple displays? What is the maximum resolution for an external display?

Can you wall mount the "Tapered Edge" Aluminum iMac models? Are they VESA compliant?

How can you "force" or "hack" the iMac Retina 4K and iMac Retina 5K models to run at native resolution or otherwise fit more content on screen than by default?

Design, Configuration, & Purchasing Q&As:

Who designed the "Tapered Edge" Aluminum iMac?

Where can I buy a "Tapered Edge" Aluminum iMac model?

What are the custom configuration options for the "Tapered Edge" Aluminum iMac models?

What are the "pros and cons" of the "Tapered Edge" Aluminum iMac? Is one right for me?




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