Advertising Disclosure Imac 27 Memory Upgrade Comparison - June 2025
4 Best Imac 27 Memory Upgrade In the UK
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
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| 1 Best Choice  9.8Exceptional | 2 Best Value  9.7Exceptional | 3  9.6Exceptional | 4  9.3Excellent |
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ModelOWC - 64GB OWC Memory Upgrade Kit - 4 x 16GB PC21300 DDR4 2666MHz SO-DIMMs for 27-inch iMac with Retina 5K (2019-2020) and compatible PCs | Model OWC - 32GB OWC Memory Upgrade Kit - 4 x 8GB PC14900 DDR3 1866MHz SO-DIMMs for 27-inch iMac w/Retina 5K Display (Late 2015) models and compatible PCs | Model Timetec Hynix IC Compatible with Apple 2019 iMac 27-inch w/Retina 5K Display, Late 2018 Mac Mini DDR4 2666MHz PC4-21300 2Rx8 CL19 1.2V SODIMM Memory RAM (32GB Kit) | Model PC3L 12800S DDR3L 1600MHz 16GB Kit (2x8GB) SODIMM RAM 1.35V/1.5V 204-Pin Memory Upgrade for MacBook Pro, iMac, Mac mini/Server |
BrandOWC | Brand OWC | Brand Timetec | Brand motoeagle |
Reviews | Reviews | Reviews | Reviews  |
Available On | Available On | Available On | Available On |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.8
1OWCOWC - 64GB OWC Memory Upgrade Kit - 4 x 16GB PC21300 DDR4 2666MHz SO-DIMMs for 27-inch iMac with Retina 5K (2019-2020) and compatible PCs
Main highlights- Memory Upgrade Compatible with PC Laptops: Compatible with Intel / AMD Process based PCs capable with the specifications listed above. Memory complies with JEDEC Specifications
- Memory Upgrade Compatible with 2019 iMac: iMac w/Retina 5K display (27-inch Early 2019) Model ID: iMac19,1 (3.0GHz i5, 3.1GHz i5, 3.7GHz i5, 3.6GHz i9)
- Free technical support from our expert technicians, online installation videos available, Every module is backed by OWC Memory Lifetime Limited Warranty including the OWC Lifetime Advanced Replacement Program"
- 64 GB (4 x 16GB) PC4-21300 DDR4, 206-pin, SO-DIMM, 1.2V, RoHS Certified, warranty safe memory upgrade
-
9.7
2OWC
OWC - 32GB OWC Memory Upgrade Kit - 4 x 8GB PC14900 DDR3 1866MHz SO-DIMMs for 27-inch iMac w/Retina 5K Display (Late 2015) models and compatible PCs
Why we love it
Boosts iMac performance significantly.
Perfect for multitasking and creative work.
Lifetime warranty for peace of mind.
Main highlights- OWC Memory Lifetime Limited Warranty including the OWC Lifetime Advanced Replacement Program
- OWC 32GB (4x8GB) PC14900 DDR3 1866MHz SO-DIMMS Memory
- Complies with JEDEC specifications
- Compatible with 27" (2015) iMac with Retina 5K models and compatible PCs
- Capacity: 32GB (4 x 8GB)
-
9.6
3Timetec
Timetec Hynix IC Compatible with Apple 2019 iMac 27-inch w/Retina 5K Display, Late 2018 Mac Mini DDR4 2666MHz PC4-21300 2Rx8 CL19 1.2V SODIMM Memory RAM (32GB Kit)
Why we love it
Easy installation with clear instructions.
Significant performance boost for multitasking.
Great value compared to Apple's pricing.
Main highlights- Special Installation Guide for iMac 2020 and wait 30 seconds for your iMac to recognize the new memory; Guaranteed – Lifetime warranty from Purchase Date Free technical support
- DDR4 2666MHz / 2667MHz PC4-21300/ PC4-21333 Unbuffered NonParity Non-ECC 260 Pin 1.2V CL19 Dual Rank 2Rx8 based 1024x8 Module Size: 32GB Package: 2x16GB
- Compatible For Mid 2020 iMac w/ Retina 5K Display model ID: iMac 20,1 / iMac 20,2 (i5 3.1GHz, i5 3.3GHz, i7 3.8GHz, i9 3.6GHz)
- Compatible For Late 2018 Mac Mini model ID: Mac Mini 8,1 (i3 3.6GHz, i5 3.0GHz, i7 3.2GHz)
- Compatible For Early 2019 iMac w/ Retina 5K Display model ID: iMac 19,1 (i5 3.0GHz, i5 3.1GHz, i5 3.7GHz, i9 3.6GHz)
Our ranking system
The TopChoice.co.uk Team selects top-of-the-line items from a wide selection and conducts rigorous evaluations on almost all the products available on the internet. We rank each product based on how well it matches our criteria.We can ensure that the product is well-tested with the help of our expertise, experts, and artificial intelligence technology. TopChoice.co.uk requires consistent care for the products we review, ensuring that our assessments are always accurate and up to date.
Features
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Consumer Reviews
We ensure an evaluation of the ratings using references all over the internet for each product. With the help of our AI technology and professional review teams, we give weight to the worth of individual user experiences.
Popularity
Popularity is an important criterion in choosing a product. Several factors contribute to the popularity of the products on our site, including prestige, relevance, reputation, news, and more.
Value for money
TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.
Value for money
TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.
