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

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Retina 5K, 27-Inch – BTO/CTO – iMac20,1 – A2115 – 3442

About this Apple iMac

Apple introduced this iMac model on August 4, 2020. This specific model is a CTO version of the iMac 27-Inch “Core i5” 3.3 (5K, 2020) (MXWU2LL/A) or iMac “Core i7” 3.8 (5K, 2020) (MXWV2LL/A). However, it is listed as a separate model for users’ convenience. This iMac model is similar to the other variants of the iMac 27-Inch 2020 model but features a faster processor.

The processor of this iMac is a 14 nm 64-bit 3.6 GHz Intel Core i9 chip with 10 cores which is significantly faster than its 2019 iMac predecessors. It features a shared 20 MB L3 cache. It has 8 GB DDR4 RAM. The default storage space of this model is 512 GB SSD. This model can be equipped with two variants of the graphics processor. It can be either a Radeon Pro 5300 graphics processor (4 GB video memory) or a Radeon Pro 5500 XT graphics processor (8 GB video memory). A security chip T2 is also installed in this model.

The display size of this iMac model is 27-Inch, a 5K Retina display with 5120 x 2880 display resolution. Unlike its previous versions, this model also supports True Tone technology. The display of this model can also support the Nano Texture surface to reduce glares and adjust coloring. Additional features include a 1080p FaceTime HD webcam, studio-quality three-mic array, and stereo speakers.

Connectivity for this device includes 4 USB 3.0 ports and 2 Thunderbolt 3 (USB-C) ports. It also supports Gigabit Ethernet, 802.11ac Wi-Fi, and Bluetooth 5.0 wireless technology. This model comes with an Apple Magic Keyboard and the multi-touch Magic Mouse 2. This iMac model weighs around 8.92 kg. The dimensions are 51.6 cm in height, 65.0 cm in width, and 20.3 cm in depth. This model supports the current version of macOS and originally came with the macOS 10.15.6.

3.6 GHz Core i9 (I9-10910)

8 GB

512 GB SSD

N/A

Storage & Memory

The RAM of this iMac model is upgradeable. However, it has the default 8 GB of 2666 MHz DDR4 SDRAM. It has a standard storage capacity of 512 GB SSD.

Screen Size and Resolution

The 27-Inch display of this iMac is a 5K Retina display that supports LED-backlit and IPS technology. Moreover, this model features True Tone to adjust brightness and color on your screen. It delivers a 5120 x 2880 native resolution and 500 nits brightness. Nano Texture can be added for an additional cost.

OS & Processor

The pre-installed operating system of this iMac is macOS X 10.15.6 (19G2005) and is fully compatible with MacOS Ventura with the exception of the minor Live Captions in FaceTime, Emoji Dictation, and Reference Mode with Sidecar features.

This model is powered by a 10-core 3.6 GHz Intel Core i9 Comet Lake processor (I9-10910). The higher number of cores allows parallel processing to achieve high performance. Each core has a shared L3 cache of 20 MB. The GPU for this model can be a Radeon Pro 5300 graphics processor with the 4 GB of GDDR6 VRAM or a Radeon Pro 5500 XT graphics processor featuring 8 GB of GDDR6 VRAM.

This model also supports Turbo Boost to reach the processing speed of 5.0 GHz

Inclusive Features:

High-end Comet Lake Core i9 processor
10 independent cores
Turbo Boost speed of 5.0 GHz
Up to 8 GB of video memory
Standard 8 GB DDR4 SDRAM (upgradeable)
512 SSD storage (upgradeable)
T2 security chip
Retina 5K 27-Inch display
High native resolution of 5120 x 2880
True Tone and Nano Texture compatibility
FaceTime HD webcam
Upgradeable keyboard and mouse
Various connectivity options
Pre-installed macOS
Tampered edge model

Introduced:August 4, 2020		Discontinued: March 8, 2022
Screen Size and Resolution		Memory
Screen Size	27″ 16:9 Widescreen	Level 1 Cache	32k/32k x6
Resolution	5120×2880	Level 2/Level 3 Cache	256k x6, 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 5300
Cache Bus Speed	3.6 GHz (Built-in)	VRAM Type	Dedicated
ROM/Firmware	EFI	Standard VRAM	4 GB, 8 GB
EFI Architecture	64-Bit	Maximum VRAM	4 GB, 8 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	iMac20,1	Power Adapter	NA

Identifier reference: MXWU2LL/A, A2115, EMC 3442, iMac20,1. Use these together because one Apple identifier can sometimes cover multiple configurations.

Last reviewed by Techable: August 14, 2025Identifiers checked: order number, A-number, EMC, and model identifier when available.

Model summary

This iMac at a glance

Family: iMac
Order Number: MXWU2LL/A
Model Number: A2115
EMC: 3442
Model ID: iMac20,1
Year: 2022

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Next steps

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Common questions

Is MXWU2LL/A the same as A2115?

Not exactly. MXWU2LL/A usually points to a specific retail configuration, while A2115 identifies the broader Apple hardware family. Always check the EMC and model identifier too.

What iMac is model A2115?

A2115 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 3442 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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