All OWC brand memory is thoroughly tested and assured to perform flawlessly with your iMac and is covered by a Lifetime Advance Replacement Warranty and a Money-Back Guarantee. To make the memory installation process as stress-free and straightforward as possible, we provide step-by-step installation videos to walk users through the upgrade process and expert technical support, who are more than happy to answer any questions you may have. An Apple iMac consists of these computer parts: iMac logic board, iMac screen, iMac dedicated graphics card, iMac dedicated power supply, HDD or SSD drive. Since the debut of the Apple iMac in 1998, OWC has offered Apple-compatible memory upgrades for any Apple iMac desktop.
We recommend professional installation for these models to ensure you upgrade your iMac RAM safely. If you own a 21.5-inch iMac or an iMac Pro, the memory upgrade process is more advanced and involves removing and reinstalling the iMac screen to access the memory. After opening this door, you can easily access and pull out the original memory and replace it with any other Apple-compatible memory modules. Thunderbolt will maximizes the performance of any SSD but will be a pricier solution.
The first option there would be either using Thunderbolt or USB 3 interface. However, you can get some performance improvement by migrating your system to an external SSD boot drive. In the back of each 27-inch iMac, there is a small memory bay door that houses the memory cage. Replacing RAM is a major operation in that model iMac. If you own a 27-inch iMac, upgrading the memory is simple and should only take about five minutes to complete.
