Crucial 64GB Kit (2x32GB) DDR4-2666 SODIMM
CT2K32G4S266M
Model Years: 2019–2020
Our data matches the Apple MacBook Pro 16-inch (Intel) (MacBookPro16-1) with Crucial 64GB Kit (2x32GB) DDR4-2666 SODIMM (DDR4, SO-DIMM, 2666MHz, 64GB); Crucial 32GB DDR4-2666 SODIMM (DDR4, SO-DIMM, 2666MHz, 32GB); Crucial 32GB Kit (2x16GB) DDR4-2666 SODIMM (DDR4, SO-DIMM, 2666MHz, 32GB), plus 3 more options listed below.
Supported memory profile: DDR4, SO-DIMM, 2666MHz, up to 64GB max, 2 slots.
Before buying, confirm your exact model number, memory generation, form factor (SO-DIMM), speed, and maximum supported capacity. Live eBay listings are shown below and may change.
Listings and prices are pulled from eBay and may change. Always verify compatibility before purchase. Listings are updated daily.
CT2K32G4S266M
CT32G4SFD8266
CT2K16G4S266M
CT16G4SFD8266
CT8G4SFRA266
Based on our compatibility data, the Apple MacBook Pro 16-inch (Intel) (MacBookPro16-1) supports DDR4, SO-DIMM, 2666MHz, up to 64GB max, 2 slots. Matched modules include Crucial 64GB Kit (2x32GB) DDR4-2666 SODIMM (DDR4, SO-DIMM, 2666MHz, 64GB); Crucial 32GB DDR4-2666 SODIMM (DDR4, SO-DIMM, 2666MHz, 32GB); Crucial 32GB Kit (2x16GB) DDR4-2666 SODIMM (DDR4, SO-DIMM, 2666MHz, 32GB); Crucial 16GB DDR4-2666 SODIMM (DDR4, SO-DIMM, 2666MHz, 16GB); Crucial 8GB DDR4-2666 SODIMM (DDR4, SO-DIMM, 2666MHz, 8GB); N/A (LPDDR3, N/A, 1866MHz, 0GB). Always confirm your exact model number before purchasing.
Check that your device label or manual shows MacBookPro16-1 (or MacBook Pro 16-inch (Intel)). Confirm memory generation, form factor (SO-DIMM), speed, slot count, and maximum supported capacity match the specs on this page before ordering.
Many systems run best with matched pairs (same capacity and speed). Mixing capacities or speeds may work but can force lower speeds or single-channel mode — check your OEM documentation.
Current eBay listings for compatible RAM modules are shown below. Prices and availability change frequently — verify listing details and seller ratings before you buy.
This device uses DDR4 at 2666MHz. Maximum supported capacity is 64GB.
This model has 2 RAM slots. Installing matched pairs (dual-channel) gives the best performance — use identical capacity modules in both slots.
Always power off and unplug your device before installing RAM. Ground yourself to avoid static discharge.