Actual product may differ slightly in appearance.
OWC Memory Upgrades For 21.5" iMac with Retina 4K & Non-Retina Display (2017)
64GB
Up to 64GB memory
2x
Up to 2x more memory vs. factory options
Works with the following Model IDs
- iMac18,1
- iMac18,2
View our memory performance tests
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Watch our easy DIY install videos
OWC MaxRAM Certification
Lifetime Memory Warranty
OWC Memory
- This Mac has two available memory slots.
- Install in pairs for best performance.
- Backed by an OWC Limited Lifetime Warranty.
Complete Memory Kit Buying Options 2400MHz DDR4 PC3-19200 -- Maximum 64GB supported
| 16GB (8GB x 2) | $122.99 | Learn more | Buy Now |
| 32GB (16GB x 2) | $219.99 | Learn more | Buy Now |
|
64GB (32GB x 2)
Compatible with iMac18,2 only
|
$499.99 | Learn more | Buy Now |
Memory Kit Buying Options 2400MHz DDR4 PC3-19200 -- Maximum 64GB supported
| 16GB (8GB x 2) | $117.99 | Learn more | Buy Now |
| 32GB (16GB x 2) | $214.99 | Learn more | Buy Now |
|
64GB (32GB x 2)
Compatible with iMac18,2 only
|
$494.99 | Learn more | Buy Now |
Install Videos
Our step-by-step installation videos guide you through upgrading your Mac, iPhone, iPad or iPod.
View all Install Videos »
