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Retina 5K, 27-inch, Mid 2020 - 5.0GHz Core i9

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52,004 reviews

Apple iMac Retina 5K, 27-inch, Mid 2020 - 5.0GHz Core i9 Compatible Memory / RAM Upgrades

Not your exact model? See all Apple iMac or 2020 First Released models, or use our Apple Serial Number Search

Model Specifications 209,823 Apple Upgrades Supplied

Make & Model:

Apple iMac Retina 5K, 27-inch, Mid 2020 - 5.0GHz Core i9 (Latest iMac)

Apple Reference:

iMac20,2 3442 A2115

Total Memory Slots:

Maximum Memory:

Installed Memory:

Check how much Memory you currently have installed

Important Notes:

Mr Memory recommends you install modules in pairs for Dual-channel performance - View Dual-channel Memory Video.

Mr Memory recommends removing the original Memory modules and installing either 2 or 4 matched modules. This will keep dual-channel mode active and allow the Memory to run at maximum speed - iMac 2020 Memory Configuration Guide.

Basic configuration of 8GB (2 x 4GB) up to 128GB (4 x 32GB @ £2,600* from Apple).

For Guaranteed Compatible Memory, please choose a model that matches your model's Release Date, Screen Size and Processor.
How to Identify your Apple.

High powered meets "Hi everyone".
macOS Monterey - Out Now!
Ensure your Mac is ready for Apple's latest operating system by upgrading to the latest DDR4 memory!.

To get the best performance and speed from your iMac, upgrade to the maximum memory.

We always send matched modules, when you order 2 or more.

Help Me Choose

Choose a Memory upgrade for your Apple iMac Retina 5K, 27-inch, Mid 2020 - 5.0GHz Core i9:

DDR4 PC4-21300 2666MHz 260-pin SODIMM

Kingston FURY Impact DDR4 PC4-21300 2666MHz SODIMM

DDR4 PC4-21300 2666MHz 260-pin SODIMM (2667MHz)

Product Specifications

Upgrade your computer with DDR4 2666MHz memory - the quickest, easiest way to boost performance and speed! Adding extra memory is one of the most cost-effective ways to make your operating system and applications run faster and smoother for peak performance. Hi, Speed!

All memory is brand new, comes with a Full Lifetime Warranty and is packaged and protected by bespoke Mr Memory Anti-Static shield bags, recyclable plastic packets or brown cardboard boxes.

Size

(Inc VAT)

32GB

IN STOCK

BEST SELLER

$135.22 each

$136.37

Save $1.15 Today

BUY NOW

16GB

IN STOCK

$66.18 each

$67.32

Save $1.15 Today

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8GB

IN STOCK

$36.82 each

$37.96

Save $1.15 Today

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4GB

IN STOCK

$25.55 each

BUY NOW

Benefits of Upgrading Installation Guides Returns & Refunds Delivery Options

Orders placed Monday to Friday after 5.15pm (UK time) or on weekends/bank holidays will be processed the next business day.
(subject to stock, order verification and chosen delivery option)

Rated Excellent,
based on 52,004 reviews

TRUSTED
Lifetime Warranty

100%
Compatible

WORLDWIDE
Shipping

UNLIMITED
Support

27 YEARS
and Counting

Trusted & Reliable Customer Reviews

Apple Compatible / Memory
Upgrades Purchased

Swift delivery

Swift delivery, good price, good communications, informative website and good product. Perfect service. Thanks

Tony Mills - Friday 26th November 2021

Verified order

Hide reply

Reply from Mr Memory

You are very welcome Tony! 👍 Thank you for your lovely comments and also your 5* review!

Behind every review is an experience that matters to us!
We have been collecting customer reviews on Trustpilot for the last 8 years, we are now also collecting reviews on Google!

All reviews are individually read, audited and verified by our team using the customers unique invoice number, this is to ensure it is valid and genuine. I reply to each review personally to thank each customer, as we really do value every review received!

Zoe Killick - Customer Care & Support
15:26pm - Friday 26th November 2021

Apple Compatible / Memory
Upgrades Purchased

Great service and product

Great service and product. Highly recommend.

Ash James - Thursday 25th November 2021

Verified order

Hide reply

Reply from Mr Memory

Highly recommended, that is wonderful to hear Ash. Thank you for your excellent review! 😀

Behind every review is an experience that matters to us!
We have been collecting customer reviews on Trustpilot for the last 8 years, we are now also collecting reviews on Google!

All reviews are individually read, audited and verified by our team using the customers unique invoice number, this is to ensure it is valid and genuine. I reply to each review personally to thank each customer, as we really do value every review received!

Kerry Harnes - CEO
09:22am - Friday 26th November 2021

Apple Compatible / Memory
Upgrades Purchased

Excellent service

Used many times and a great service.

James Godfrey - Thursday 25th November 2021

Verified order

Hide reply

Reply from Mr Memory

That's great to hear James! 👍 Thank you for your 5 Star review today - We really do value every review we receive!

Behind every review is an experience that matters to us!
We have been collecting customer reviews on Trustpilot for the last 8 years, we are now also collecting reviews on Google!

All reviews are individually read, audited and verified by our team using the customers unique invoice number, this is to ensure it is valid and genuine. I reply to each review personally to thank each customer, as we really do value every review received!

Kerry Harnes - CEO
09:21am - Friday 26th November 2021

Apple Compatible / Memory
Upgrades Purchased

Thanks

Quick and prompt dispatch.

Albert Mahoi - Thursday 25th November 2021

Verified order

Hide reply

Reply from Mr Memory

You are very welcome Albert - Thank you for your lovely comments and also your 5* review! 👍

Behind every review is an experience that matters to us!
We have been collecting customer reviews on Trustpilot for the last 8 years, we are now also collecting reviews on Google!

All reviews are individually read, audited and verified by our team using the customers unique invoice number, this is to ensure it is valid and genuine. I reply to each review personally to thank each customer, as we really do value every review received!

Kerry Harnes - CEO
09:16am - Friday 26th November 2021

Apple Compatible / Memory
Upgrades Purchased

Outstanding customer service

Outstanding customer service, and I save £1,000's vs. going to Apple for 64GB of iMac RAM!

Humperdinck Jackman - Thursday 25th November 2021

Verified order

Hide reply

Reply from Mr Memory

That's great to hear! 👍 Thank you for your 5 Star review today - We really do value every review we receive!

Behind every review is an experience that matters to us!
We have been collecting customer reviews on Trustpilot for the last 8 years, we are now also collecting reviews on Google!

All reviews are individually read, audited and verified by our team using the customers unique invoice number, this is to ensure it is valid and genuine. I reply to each review personally to thank each customer, as we really do value every review received!

Jack Cooper - Operations Assistant
14:27pm - Thursday 25th November 2021

Apple Compatible / Memory
Upgrades Purchased

Great stuff

Great stuff, ram works greatly!
Thanks a lot

George Malliaropoulos - Thursday 25th November 2021

Verified order

Hide reply

Reply from Mr Memory

You are very welcome George - Thank you for your lovely comments and also your 5* review! 👍

Behind every review is an experience that matters to us!
We have been collecting customer reviews on Trustpilot for the last 8 years, we are now also collecting reviews on Google!

All reviews are individually read, audited and verified by our team using the customers unique invoice number, this is to ensure it is valid and genuine. I reply to each review personally to thank each customer, as we really do value every review received!

Zoe Killick - Customer Care & Support
09:35am - Thursday 25th November 2021

Apple Compatible / Memory
Upgrades Purchased

I cannot fault Mr Memory

I cannot fault Mr Memory. Their website made it easy to navigate to the correct products for my computer, and the cost options were presented clearly. Checkout was smooth, and their package arrived quickly. They followed up with an email to check everything was OK. Excellent service.

anil barnes - Wednesday 24th November 2021

Verified order

Hide reply

Reply from Mr Memory

What a fantastic review! Thank you so much for your review, we really do care and appreciate it - Enjoy using your new upgrades!

Behind every review is an experience that matters to us!
We have been collecting customer reviews on Trustpilot for the last 8 years, we are now also collecting reviews on Google!

All reviews are individually read, audited and verified by our team using the customers unique invoice number, this is to ensure it is valid and genuine. I reply to each review personally to thank each customer, as we really do value every review received!

Craig Aldridge - Computer Memory & SSD Specialist
17:31pm - Wednesday 24th November 2021

Apple Compatible / Memory
Upgrades Purchased

Great product and service

Great product, service and delivery. Easy to find out which memory I needed for my Mac, along with how to install the cards, making it a simple job.

Peter - Wednesday 24th November 2021

Verified order

Hide reply

Reply from Mr Memory

Amazing news Peter! 😀 Thank you for taking the time to share your 5* order experience with us today! We really do value every review we receive!

Behind every review is an experience that matters to us!
We have been collecting customer reviews on Trustpilot for the last 8 years, we are now also collecting reviews on Google!

All reviews are individually read, audited and verified by our team using the customers unique invoice number, this is to ensure it is valid and genuine. I reply to each review personally to thank each customer, as we really do value every review received!

Craig Aldridge - Computer Memory & SSD Specialist
17:31pm - Wednesday 24th November 2021

Apple Compatible / Memory
Upgrades Purchased

Faultless

Faultless. Was a little nervous having not heard of Mr Memory before and putting unknown products my iMac but I needn't of worried. My Ram arrived the following day and following the instructions emailed to me when I ordered, I'd installed my RAM in about 15 minutes. The difference in performance of my iMac is amazing. Highly recommend

Ian Gilmour - Wednesday 24th November 2021

Verified order

Hide reply

Reply from Mr Memory

What a fantastic review Ian! 🤩 Thank you so much for your review, we really do care and appreciate it - Enjoy using your new upgrades!

Behind every review is an experience that matters to us!
We have been collecting customer reviews on Trustpilot for the last 8 years, we are now also collecting reviews on Google!

All reviews are individually read, audited and verified by our team using the customers unique invoice number, this is to ensure it is valid and genuine. I reply to each review personally to thank each customer, as we really do value every review received!

Craig Aldridge - Computer Memory & SSD Specialist
17:30pm - Wednesday 24th November 2021

Apple Compatible / Memory
Upgrades Purchased

Arrived within 24 hours of thinking "I…

Arrived within 24 hours of thinking "I should probably add more RAM" as my 2015 iMac struggled with a Photoshop file. And free Haribo!

craig - Wednesday 24th November 2021

Verified order

Hide reply

Reply from Mr Memory

You matter to us Craig! 😀 We really value your review and amazing comments about your Mr Memory order experience, so thank you for sharing it with us today. I am glad you enjoyed the haribo!

Behind every review is an experience that matters to us!
We have been collecting customer reviews on Trustpilot for the last 8 years, we are now also collecting reviews on Google!

All reviews are individually read, audited and verified by our team using the customers unique invoice number, this is to ensure it is valid and genuine. I reply to each review personally to thank each customer, as we really do value every review received!

Kevin Payne - Chief Commercial Officer
14:22pm - Wednesday 24th November 2021

4.9 out of 5 MORE REVIEWS

Trust the Mr Memory Brand

Feel Safe, Feel Secure & Feel Appreciated

We help people to feel safe, happy and secure. You can trust the Mr Memory brand - we will protect your data, save you money and improve the performance of your valued devices, whilst being eco-responsible.

Our Memory Specialists provide free support to anyone who needs it - at any stage of the order process. Our communication is fast and our guidance is as technical or as basic as you need it to be.

Fully informed at every stage of the order
100% Safe & Secure website
Fast dispatch - 98% of orders dispatched same day, using eco-friendly packaging
27 years in business
UK company, based in large modern business park for over 12 years
Memory sent in Anti-Static packaging for safe transit
RAM extensively tested prior to shipment
Highest quality products from the best brands in the world
Dedicated & highly trained experts with an average of 13 years experience
Instant 30 day credit available to the Public / Private Sector
250,000+ businesses use Mr Memory for their Memory/RAM & SSD upgrades
Our customers trust us with all their Memory/RAM & SSD upgrade requirements
Free environmentally friendly recycling of your used product
We are eco-responsible in everything we do and encourage you to be the same
Follow our cycle of Reduce → Reuse → Recycle
We can communicate via email in multiple languages
Over 150,000 registered online customers
All staff are GDPR trained and certified and we have a dedicated Privacy Officer
Chamber Member of the Sussex Chamber of Commerce

Mr Memory are now collecting reviews on Google!

Since November 2021 we are now collecting reviews from our customers on Google
We are expanding our review platforms and we are very excited to see our reviews grow
Each review is read and responded to by one of the team as we really appreciate each one received
Please share your experience with the Google community - review us on Google

Eco-Friendly

Mr Memory is constantly looking at ways to reduce our carbon footprint with an aim to becoming Carbon Neutral.

At least half of our employees walk, cycle or car share
Waste reduction procedures in place - all our packaging can be recycled
Limited printing to essential customer paperwork only
Energy supplier provides 100% green electricity sourced from wind farms
We turn off all electrical devices when not being used and purchase energy efficient devices
We are upgrading our lighting to LED bulbs
Suppliers ensure all orders are packed using recyclable material
We are constantly reviewing our Eco-Friendly Statement

Be Social, Stay Connected with Mr Memory

Stay connected with us on your favourite social sites. Recommend us to your digital friends and family, we would love to see your likes, recommendations, tweets, posts and pictures of your upgrades, so please share those with us!

We look forward to connecting with you.

Facebook

Twitter

Instagram

YouTube

Connect with @mrmemory.co.uk on Facebook for the latest news, product updates and competitions.

Follow @mrmemory_co_uk on Twitter for the latest news, product updates and competitions.

Engage with a Memory Specialist on LinkedIn and keep track of the latest Mr Memory news and products.

Follow Mr Memory on Instagram and tag your upgrade pictures, plus see our latest news and products.

Subscribe to our channel and watch our helpful memory installation guides and troubleshooting tips.

Buy British, Save Jobs, Protect the Nation

To keep the UK moving forward in these uncertain times, we believe that purchasing from UK companies allows us to bounce back as a nation.

Buy from the UK and keep the money at home - At Mr Memory we use UK based suppliers wherever possible
Mr Memory have been contributing to the UK economy since 1994. We pay UK taxes and only employ people in the UK
Mr Memory supply and support many NHS Trusts and critical frontline organisations in the UK
Buy British, save jobs, and remember... we are all in this together!

COVID-19 Secure - Our Robust Business Procedures

In response to the current COVID-19 (Coronavirus) pandemic we have implemented several changes to our procedures so we can continue providing our service and products to our valued customers.

The World Health Organisation (WHO) advise that the likelihood of an infected person contaminating commercial goods is low. The risk of catching COVID-19 from a package that has travelled and has been exposed to different conditions and temperatures is also low.

Miss Kerry Harnes (CEO) has taken on the responsibility of our COVID-19 strategy to ensure we are compliant and secure. Below is a summary of the steps we are taking to keep our staff, their families and our customers safe. These procedures are under constant review, but so far they are working and everyone at Mr Memory is in good health!

Our COVID-19 policy has been reviewed and adjusted to meet the latest government restrictions
Strict social distancing - we are maintaining a 2m distance or 1m where 2m is not viable, with personal protection equipment (PPE). The company has been split into department bubbles to protect staff and our customers
All staff are keeping a record of all contacts for track and trace to ensure maximum safety for friends, family and colleagues
Regular cleaning and disinfection of surfaces including all door handles, light switches, computer/telephone equipment, tables, chairs, kitchen & toilet facilities, air conditioning units etc
Monitor physical & mental/emotional health of all staff - How to support mental health at work (PDF)
Follow advice from the UK's Mental Health Foundation - How to look after your mental health during the coronavirus outbreak
Free COVID-19 lateral flow testing kits are offered to all members of staff

Play our educational 50+ HD videos

WATCH 50+ VIDEOS

Module:	x1 (single module only)
Memory Brand:	We supply the best brands in the world so you will only receive brand new premium memory of the highest quality
Compatibility:	100% Guaranteed Compatible with your Apple iMac and All Operating Systems
Product Warranty:	Full Lifetime Warranty
System Warranty:	This upgrade will not invalidate your system warranty
Speed:	2666MHz (PC4-21300)
Technology:	DDR4 SDRAM
Pins:	260-pin, Gold Connectors
Form Factor:	SODIMM (Small Outline Dual Inline Memory Module)
Module Dimensions:	70mm x 31mm (LxH)
Data Integrity:	Non-ECC
Ranking:	1R, 2R, 4R
Voltage:	Low - 1.2V
CAS Latency:	You will receive memory with the correct CAS Latency for your model

Apple iMac Retina 5K, 27-inch, Mid 2020 - 5.0GHz Core i9 Compatible Memory / RAM Upgrades

SAVE UP TO 77%*

Example 1

Example 2

Product Specifications

Trusted & Reliable Customer Reviews

Ranked No. 1 in 2 Trustpilot Categories:

Swift delivery

Great service and product

Excellent service

Thanks

Outstanding customer service

Great stuff

I cannot fault Mr Memory

Great product and service

Faultless

Arrived within 24 hours of thinking "I…

Installation & Support

Installation is Easy with Fast & Professional Support

Installation

Support

Benefits of Upgrading your Computer Memory

Upgrading is Easy - Go to the Maximum

Speed & Peak Performance

Simple, Quick & Easy

Big Savings

Trust the Mr Memory Brand

Feel Safe, Feel Secure & Feel Appreciated

We are eco‑responsible

Mr Memory are now collecting reviews on Google!

Eco-Friendly

Be Social, Stay Connected with Mr Memory

Buy British, Save Jobs, Protect the Nation

COVID-19 Secure - Our Robust Business Procedures

International Returns, Refunds & Delivery

International Returns & Refunds

International Delivery

Play our educational 50+ HD videos

What is a Matched Pair?

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