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OWC Memory Upgrades For 27" iMac with Retina 5K Display (2019 - 2020)
- 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.
2666MHz DDR4 PC4-21300 -- Maximum 128GB supported
NOTE: For 27-inch iMac (2020) models — iMac20,1 and iMac 20,2 — OWC recommends that all DIMMs be the same capacity, speed, and manufacturer to ensure optimal memory performance.
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.
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