32GB OWC Matched Memory Upgrade Kit (4 x 8GB) 2666MHz PC4-21300 DDR4 SO-DIMM

Unlike other memory manufacturers, OWC owns and maintains an on-site, state-of-the-art Test Lab featuring nearly every Apple Mac model and variation manufactured over the past 25 years to ensure their RAM upgrades meet, if not surpass, all Apple Design Specifications.

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.