In the teardown of the inch 4K iMac on Thursday, iFixit found Apple had used SO-DIMM slots for the RAM, instead of soldering the. Get memory specifications and learn how to install memory in iMac Get memory specifications for iMac (Retina 5K, inch, ), then learn Number of memory slots : 4. Mix n match RAM memory in iMac with (potentially) an empty slot remaining [ duplicate] It has 4 memory slots and presently two are occupied with 2Gb modules Download Stack Overflow's Developer Survey Data. A collection of tutorials from the 9to5Mac team helping you fix and get the most out of your Mac and iOS devices. Install memory in an iMac Get memory specifications and learn how to install memory in iMac computers. While each year we fear that Apple will take away the ability for user upgrades, the iMacs thankfully retain the four user accessible RAM slots. Move the DIMM ejector clips to their fully open position: Save and Manage Tabs in Edge. Computer Memory Type Maximum Memory iMac Mid DDR2 4GB 2x2GB iMac Early DDR2 4GB 2x2GB iMac Early DDR3 8GB 2x4GB You can use a 1GB or 2GB RAM module in each slot for iMac Mid and iMac Early Out of curiosity, can 32GB x 2 memory modules be used in lieu of 16GB x4? I recently acquired the base model Mid 5K iMac, and I have a post in the works that explains my reasoning for that decision. Arial, Helvetica, sans-serif; font-size: Power and data via one cable for an ultra clean look and portability. It depends on model; many models will work faster if identical pairs are used, but will recognize and use unpaired memory. You can use a 1GB or 2GB RAM module in each slot for iMac Mid and iMac Early How to Check Your Apple Support Options.