Apple iMac 27-Inch “Core i9” 3.6 (5K, 2020; 5700/XT) Specs

Retina 5K, 27-Inch – BTO/CTO – iMac20,2A21153442  

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About this Apple iMac

Apple launched this incredible iMac on August 4, 2020. It is listed as an entirely separate model. However, it is a CTO version of the iMac 27-Inch “Core i7” 3.6 (5K, 2020). The significant differences between this CTO model and the base model are that this iMac features a more powerful processor and better GPU options.

The CPU of this iMac is a fast Intel Core i9 processor with 3.6 GHz speed and 10 independent cores. This latest processor offers higher performance because of higher processing speed, extra cores, and more cache memory. It has a shared L3 cache memory of 20 MB which makes it significantly faster than its 2019 iMac predecessors. This iMac is also equipped with a T2 chip for better security.

The standard RAM of this model is 8 GB. It has 512 GB SSD standard storage. It comes with an option to either equip it with a Radeon Pro 5700 graphics processor featuring 8 GB VRAM or a Radeon Pro 5700 XT graphics processor featuring 16 GB VRAM. A 1080p FaceTime HD webcam is also installed, along with the studio-quality three-mic array and stereo speakers.

According to Apple, the display of this iMac is a 27-Inch Retina 5K display which is also one of the best computer displays ever. It has a high-resolution display of 5120 x 2880. True Tone and Nano Texture technologies are also featured in this model. The front of this iMac is glass, while the rear case is aluminum. It is a tapered-edge design model.

A wide range of connectivity options for this iMac includes 4 USB 3.0 ports, 2 Thunderbolt 3 ports (USB-C), Gigabit Ethernet, 802.11ac Wi-Fi, and standard Bluetooth 5.0 wireless. An Apple Magic Keyboard and the multi-touch Magic Mouse 2 are also present in the box with the iMac.

The video memory can either be 8 GB or 16 GB. The RAM is upgradeable to a higher range of up to 128 GB. The default storage capacity of 512 GB SSD could be upgraded to 8 TB SSD. The display of this iMac can be equipped with Nano Texture glass. This iMac’s default mouse and keyboard could also be upgradeable to Magic Keyboard with Numeric Keypad and Magic Trackpad 2 for the extra cost. This model supports the current version of macOS and originally came with the macOS 10.15.6

Processor

3.6 GHz Core i9 (I9-10910)

Ram

8 GB

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Storage

 512 GB SSD

Battery Life

N/A

Storage & Memory

This iMac features an upgradeable 2666 MHz DDR4 SDRAM of 8 GB. It also has 20 MB of shared L3 cache memory. It comes with a standard storage capacity of 512 GB SSD.

Screen Size and Resolution

The display size of this iMac is a widescreen LED-backlit 27-Inch (16:9) TFT active matrix Retina 5K display. The display of this iMac is also True Tone compatible. It provides a 5120 x 2880 display resolution and 500 nits brightness. It also supports wide color and DCI-P3 gamut. 

The display of this iMac can also be equipped with Nano Texture glass to control the light.

OS & Processor

This iMac provides superior performance using a 64-bit 10th Generation Intel Core i9 Comet Lake (I9-10910) processor. It also has 10 cores for faster multitasking speed. The graphics processor for this iMac can be a Radeon Pro 5700 or a Radeon Pro 5700 XT. These graphics processors come with GDDR6 video memory of 8 GB and 16 GB, respectively.

The pre-installed OS of this iMac is macOS X 10.15.6 (19G2005).  

Upgradability

The macOS version of this iMac can be upgraded to the macOS Ventura while unlocking additional functionalities except the minor Live Captions in FaceTime, Emoji Dictation, and Reference Mode with Sidecar features. 

The video memory can either be 8 GB or 16 GB. The RAM is upgradeable to a higher range of up to 128 GB. The default storage capacity of 512 GB SSD could be upgraded to 8 TB SSD. The display of this iMac can be equipped with Nano Texture glass. This iMac’s default mouse and keyboard could also be upgradeable to Magic Keyboard with Numeric Keypad and Magic Trackpad 2 for the extra cost.

Inclusive Features

  • Apple’s latest Core i9 10th Generation processor
  • 10 Independent cores
  • Shared 20 MB L3 cache memory
  • T2 chip for security
  • 4 RAM slots (two vacant)
  • 8 GB upgradable DDR4 SDRAM
  • Upgradeable 512 GB SSD storage space
  • LED-backlit 27-Inch Retina 5K IPS display
  • High-resolution display
  • True Tone compatible display
  • Nano Texture glass option
  • Turbo Boost support (5.0 GHz)
  • Tapered Edge
  • Lightweight

 

Introduced: August 4, 2020

Discontinued: March 8, 2022

Screen Size and Resolution

Memory

Screen Size

27″ 16:9 Widescreen

Level 1 Cache

32k/32k x10

Resolution

5120×2880

Level 2/Level 3 Cache

256k x10, 20 MB

Processor

RAM Type

PC4-21300 DDR4

Processors

1 (10 Cores)

Min. RAM Speed

2666 MHz

Architecture

64-Bit

Standard RAM

8 GB

Speed

3.6 GHz

Maximum RAM

128 GB

Type

Core i9 (I9-10910)

RAM Slots

4

Processor Upgrade

LGA 1200

Motherboard RAM

None

FPU

Integrated

Graphics

System Bus Speed

8 GT/s

Video Card

Radeon Pro 5700/5700 XT

Cache Bus Speed

3.3 GHz (Built-in)

VRAM Type

Dedicated

ROM/Firmware

EFI

Standard VRAM

8 GB, 16 GB

EFI Architecture

64-Bit

Maximum VRAM

16 GB

Storage

Inclusive Features and Ports

Standard Storage

512 GB SSD

Standard Optical Drive

None

Storage Speed

N/A

Standard Ethernet

10/100/1000Base-T

Storage Dimensions

Soldered

Standard Modem

None

Storage Interface

Soldered

Standard Air Port

802.11ac

Battery

Standard Bluetooth

5.0

Type

N/A

USB Port 3.0

4 (3.0)

Battery Life

N/A

Thunderbolt Ports

2

Description

Keyboard

Magic Keyboard

Case Type

All-in-One

Inclusive Input

Magic Mouse 2

Form Factor

27″ iMac Tapered Edge

S-Video Output

None

Apple Order No

BTO/CTO

Microphone

1 (Built-in)

Apple Subfamily

Retina 5K, 27-Inch, 2020

Headphone

NA

Apple Model Number

A2115 (EMC 3442)

Sound Out

NA

Model ID

iMac20,2

Power Adapter

NA