Apple iMac “Core i7″ 3.1 GHz 21.5” 2013 Specs

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iMac – BTO/CTO – iMac14,3 – A1418

Apple-iMac-Intel-i7-21.5-inch-2013-Specs-1-e1523133960319

About this iMac

This device is a BTO/CTO device which is nearly identical to ME087LL/A. We have listed this device separately as it has been configured with an upgraded processor when compared to the base model. This has been done to make it easier to catalog as well as easier to read.

The Apple iMac Intel Aluminum released in September 2013 was another step in creativity in the world of computers. A number of more conventional features of a computer were absent – such a DVD drive slots and the FireWire ports that were traditional with the Apple iMac brand and new features appeared – such as the Thunderbolt port which allows for the passage of both visual and audio signal. The basic components of a computer such as the RAM were upgraded as this model had an 8 GB of 1600 MHz PC3-12800 DDR3 SDRAM which could be upgraded on purchase to a 16 GB RAM but not recommended for an upgrade after even though it is a possibility. The USB ports were 3.0 ports. It also had a powerful graphics processor included with its GeForce GT 750M graphics processor with 1 GB of dedicated GDDR5 memory with a built-in FaceTime HD camera. This computer still stands tall among competitors and will continue to stand tall for a long while regardless of the amount of development that happens in the computer world.

3.1 GHz Intel i7

8 GB

1 TBHard Drive

Plugged-in

Storage

The device was built with 1 TB Serial ATA (6Gb/s) hard drive storage with a disk speed of 5400 RPM.

Screen Size and Resolution

The iMac Intel Aluminum version featured a 21.5 inch screen 1920×1080 LED-backlit 16:9 widescreen IPS display.

Processor& Graphics Processing Unit (GPU)

The iMac Intel Aluminum had the Mac OS X 10.8.4 (12E4022) operating system pre-installed on it. It was powered by Quad Core 3.1 GHz Intel “Core i7” I7-4770S (Ivy Bridge) processor with four independent processor cores on a single chip. Its graphics processor was the NVIDIA GeForce GT 750M graphics processor with 1 GB of dedicated GDDR5 memory.

Memory & Architecture

The device was built with an 8 MB on-chip level 3 cache with an 8 GB of 1600 MHz PC3-12800 DDR3 SDRAM. Its design was centered on a 64-Bit architecture.

Upgradability

Although the a1418 iMac Intel Aluminum came with 8 GB of RAM it could be upgraded up to 16 GB of RAM.

The Operating System of the iMac Intel Aluminum can also be upgraded from its pre-installed Mac OS X 10.8.4 (12E4022) up to macOS X 10.13. This iMac was also able to run Windows 7 (64-Bit) and more recently Windows 10 (64-Bit).

This iMac had the following dimensions of 45.0 cm, 52.8 cm, 17.5 cm, and a weight of 12.5 lbs (5.68 kg).

Inclusive Features

The iMac includes the following features and ports:

A Power Adapter (100V-240V AC(50 Hz to 60 Hz, single phase))
Standard AirPort Extreme (802.11n).
Gigabit Ethernet
A Mini DisplayPort allowing dual and mirroring operations with resolutions of up to 2560×1600.
Stereo Speakers
Thunderbolt Ports
FaceTime HD webcam

Introduced: September 24, 2013		Discontinued: October 13, 2015
Screen Size and Resolution		Memory
Screen Size	21.5 inches TFT	Level 1 Cache	32k/32k
Resolution	1920×1080	Level 2/Level 3 Cache	256k (x4), 8 MB
Processor		RAM Type	PC3-12800 DDR3
Processors	1 (4 Cores)	Min. RAM Speed	1600 MHz
Architecture	64-Bit	Standard RAM	8 GB
Speed	3.1 GHz	Maximum RAM	16 GB
Type	Core i7 (I7-4770S)	RAM Slots	2
Processor Upgrade	Soldered	Motherboard RAM	None
FPU	Integrated	Graphics
System Bus Speed	OPI	Video Card	GeForce GT 750M
Cache Bus Speed	3.1 GHz (Built-in)	VRAM Type	GDDR5
ROM/Firmware	EFI	Standard VRAM	1 GB
EFI Architecture	64-Bit	Maximum VRAM	1 GB
Storage		Inclusive Features and Ports
Standard Storage	1 TB HDD	Standard Optical Drive	None
Storage Speed	5400 RPM	Standard Ethernet	10/100/1000Base-T
Storage Dimensions	2.5″ (9.5 mm)/Proprietary	Standard Modem	None
Storage Interface	Serial ATA (6 Gb/s)	Standard AirPort	802.11ac
Battery		Standard Bluetooth	4.0
Type	N/A	USB Port 3.0	4
Battery Life	N/A	FireWire Ports	None
Description		Keyboard	Apple Wireless Keyboard
Case Type	All-in-One	Inclusive Input	Magic Mouse/Trackpad
Form Factor	21.5 iMac Late 2012	S-Video Output	None
Apple Order No	BTO/CTO	Microphone	1 (Built-in)
Apple Subfamily	Late 2013	Headphone	1
Apple Model Number	A1418 (EMC 2742)	Sound Out	1
Model ID	iMac14,3	Power	1

Identifier reference: CTOME087LL/A, A1418, EMC 2742, iMac14,3. Use these together because one Apple identifier can sometimes cover multiple configurations.

Last reviewed by Techable: August 19, 2025Identifiers checked: order number, A-number, EMC, and model identifier when available.

Model summary

This iMac at a glance

Family: iMac
Order Number: CTOME087LL/A
Model Number: A1418
EMC: 2742
Model ID: iMac14,3
Year: 2022

Use the order number, A-number, EMC, and model identifier together when comparing, buying, or selling this device.

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Search by A-number, EMC, order number, or model identifier.

Next steps

Use the spec table to confirm the exact device, then choose the right lookup, buy, or sell path.

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Common questions

Is CTOME087LL/A the same as A1418?

Not exactly. CTOME087LL/A usually points to a specific retail configuration, while A1418 identifies the broader Apple hardware family. Always check the EMC and model identifier too.

What iMac is model A1418?

A1418 is the Apple A-number shown for this iMac family. Use the order number, EMC, and model identifier on this page to narrow the exact configuration.

What does EMC 2742 mean?

The EMC number is another Apple hardware identifier. It helps separate closely related models that may share a similar name, year, or A-number.

Can the RAM or SSD be upgraded?

Check the spec table for the exact configuration. Many newer Apple Silicon Macs have memory and storage integrated into the board, so RAM and SSD upgrades are often not practical after purchase.

What macOS versions work with this model?

Use the model identifier, release year, and processor family from the spec table when checking macOS compatibility. Compatibility can change as Apple releases new macOS versions.

Is this iMac still worth buying used?

It can be, depending on price, battery health, memory, storage, and condition. Compare this exact order number and model identifier against similar Techable listings before buying.

How much is this iMac worth?

Value depends on RAM, storage, battery health, cosmetic condition, accessories, and market demand. Use the SellMac path on this page for a quote or use the identifiers here when comparing resale prices.

What should I search if this page is not the exact configuration?

Search the order number first when available, then compare the A-number, EMC, model identifier, year, chip, RAM, and storage. The same A-number can cover more than one configuration.

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