OWC Memory Upgrades For 27" iMac with Retina 5K Display (2017)
64GB
Up to 64GB memory
2x
Up to 2x more memory vs. factory options
Works with the following Model IDs
- iMac18,3
Recommended Upgrades
Works with the following Model IDs
- iMac18,3
Recommended Upgrades
OWC Memory
- This Mac has four available memory slots.
- Install in pairs for best performance.
- All installed memory should be the same speed for best performance.
- Backed by an OWC Limited Lifetime Warranty.
Buying Options
2400MHz DDR4 PC4-19200 -- Maximum 64GB supported
Install Videos
Our step-by-step installation videos guide you through upgrading your Mac, iPhone, iPad or iPod.
View all Install Videos »
Solid State Drives
Shop SSD specifically for your iMac Experience the true speed of your mac with an OWC SSD flash storage upgrade. Select your Model ID below.
OWC General Servicing Kit for iMac
Includes all installation tools to service all Apple iMac models released since 2008.
OWC HDD to SSD Upgrade Kit for iMac
Close to maxing out your factory-installed hard drive? With the OWC Internal HDD DIY Kit you can replace your old hard drive on your own with up to a 18TB drive for more storage and backup capacity!
