Apple iMac “Core i7″ 4.0 GHz 27” 2015 Specs

iMac – BTO/CTO – iMac17,1 – A1419

Apple iMac "Intel i7" 4.0 GHz 27" 2015 Specs

About this iMac

This a1419 device is a BTO/CTO device that is nearly identical to MK482LL/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 June 2015 had some uniqueness of its own from the other models such as the 802.11ac Wi-Fi which is backward compatible with the 802.11 a/b/g/n Wi-Fi. It had an 8 GB of 1867 MHz LPDDR3 SDRAM (PC3-14900). The “thick at the middle and thin at the edges” design remained the same in this release of the computer just as in the early 2012 version. This computer had all the needs of this generation of computing packed into its 51.6 cm, 65.0 cm, 20.3 cm and featured a lightweight of 21 lbs. (9.54 kg) casing.

4.0 GHz Intel i7

8 GB

2 TB (Fusion) Drive

Plugged-in

Storage

The device was built with 2 TB “Fusion Drive” Serial ATA (6Gb/s) hard drive storage.

Screen Size and Resolution

The iMac Intel Aluminum version featured a 27-inch screen 5120×2880 LED-backlit 16:9 widescreen IPS display.

Processor& Graphics Processing Unit (GPU)

The iMac had the Mac OS X 10.11 (15A4310) operating system pre-installed on it. It was powered by a 14-nm “Skylake” Quad Core 4.0 GHz Intel “Core i7” processor (6700K) processor with four independent processor cores on a single chip. Its graphics processor was the AMD Radeon R9 M390 or AMD Radeon R9 M395 graphics processor with 2 GB of dedicated GDDR5 memory.

Memory & Architecture

The device was built with a 8 MB on-chip level 3 cache with a 8 GB of 1867 MHz LPDDR3 SDRAM (PC3-14900). It’s designed was centered on a 64-Bit architecture.

Available Upgrades

The iMac came with 8 GB of RAM it could be upgraded up to 64 GB of RAM.

The Operating System of the iMac can also be upgraded from its pre-installed Mac OS X 10.11 (15A4310) up to current MacOS X. 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 51.6 cm, 65.0 cm, 20.3 cm and a weight of 21 lbs. (9.54 kg).

Inclusive Features

The iMac includes the following features and ports:

A Power Adapter (100V-240V (50 Hz to 60 Hz, single phase))
802.11ac Wi-Fi
Gigabit Ethernet
Stereo Speakers
Thunderbolt Ports
FaceTime HD webcam

Introduced: October 13, 2015		Discontinued: June 5, 2017
Screen Size and Resolution		Memory
Screen Size	27 inches TFT	Level 1 Cache	32k/32k
Resolution	5120×2880	Level 2/Level 3 Cache	256k x4, 8 MB (on chip)
Processor		RAM Type	PC3-14900 DDR3
Processors	1 (4 Cores)	Min. RAM Speed	1867 MHz
Architecture	64-Bit	Standard RAM	8 GB
Speed	4.0 GHz (Turbo Boost 4.2 GHz)	Maximum RAM	64 GB
Type	Core i7 (I7-6700K)	RAM Slots	4
Processor Upgrade	LGA 1151	Motherboard RAM	None
FPU	Integrated	Graphics
System Bus Speed	8 GT/s	Video Card	Radeon R9 M390/M395
Cache Bus Speed	4.0 GHz (Built-in)	VRAM Type	GDDR5
ROM/Firmware	EFI	Standard VRAM	2 GB
EFI Architecture	64-Bit	Maximum VRAM	4 GB
Storage		Inclusive Features and Ports
Standard Storage	2 TB (Fusion)	Standard Optical Drive	None
Storage Speed	N/A	Standard Ethernet	10/100/1000Base-T
Storage Dimensions	3.5″ (26.10 mm)/Proprietary	Standard Modem	None
Storage Interface	Serial ATA (6 Gb/s)/PCIe	Standard Air Port	802.11ac
Battery		Standard Bluetooth	4.0
Type	N/A	USB Port 3.0	4
Battery Life	N/A	FireWire Port	None
Description		Keyboard	Apple Wireless Keyboard
Case Type	All-in-One	Inclusive Input	Magic Mouse 2/Trackpad
Form Factor	27″ iMac Late 2012	S-Video Output	None
Apple Order No	BTO/CTO	Microphone	1 (Built-in)
Apple Subfamily	Retina 5K, Late 2015	Headphone	1
Apple Model Number	A1419 (EMC 2834)	Sound Out	1
Model ID	iMac17,1	Power	1

Identifier reference: CTOMK482LL/A, A1419, EMC 2834, iMac17,1. Use these together because one Apple identifier can sometimes cover multiple configurations.

Last reviewed by Techable: August 14, 2024Identifiers checked: order number, A-number, EMC, and model identifier when available.

Model summary

This iMac at a glance

Family: iMac
Order Number: CTOMK482LL/A
Model Number: A1419
EMC: 2834
Model ID: iMac17,1
Year: 2018

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 CTOMK482LL/A the same as A1419?

Not exactly. CTOMK482LL/A usually points to a specific retail configuration, while A1419 identifies the broader Apple hardware family. Always check the EMC and model identifier too.

What iMac is model A1419?

A1419 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 2834 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.

Handling multiple devices?

Techable and SellMac can help with business upgrades, school refreshes, and larger Apple lots.

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