🚀 Elevate Your iMac Experience! Each module is rigorously tested for reliability, ensuring your system runs smoothly. Compatible with various iMac models, this upgrade is designed to meet your evolving needs. Experience seamless multitasking and rapid loading times with 2666 MHz speed. Transform your 2019 & 2020 iMac into a powerhouse with 64GB of DDR4 RAM. Enjoy peace of mind with complimentary U.S.-based tech support before, during, and after your purchase. 64GB Power 2666 MHz Speed Lifetime Warranty The A-Tech 64GB Kit (4x16GB) RAM is a high-performance memory upgrade for 2019 & 2020 27-inch Retina 5K iMacs, featuring DDR4 2666 MHz speed, non-ECC unbuffered design, and a lifetime warranty, ensuring reliability and enhanced system performance.