One note: Unix-based systems like Mac and Linux use far less RAM than Windows, so do not compare the two platforms for RAM capacity needs. So if you see a lot of swap space being used, that means you are using up all the available RAM. Under normal circumstances, the only time swap space is used is when the system needs more RAM than is physically installed. The best way to see if you need more RAM is to open up Activity Monitor and watch the swap space in the memory tab. It is incredibly easy to change the RAM on the iMac and MacSales even has videos to show you how to do it. I ordered two 4 GB chips for $100 US from, received them 3 days later, popped them in the two open slots and the system recognized the full 16GB even though the chip pairs are from different vendors, I had no problem with it. I bought the very same system you did, and it came with 2 4 GB chips in the four available slots. All OWC brand memory is thoroughly tested and assured to perform flawlessly and is covered by a Lifetime Advance Replacement Warranty and a Money-Back Guarantee.Yes, you can upgrade the RAM, and have many different options. We also provide expert technical support to assist you if any issues arise. MacRam is Australias only dedicated mac memory and mac ram store. To make memory installation as stress-free and straightforward as possible, we offer step-by-step installation videos to walk users through the upgrade process. Last-gen iMacs had seperate RAM, storage, GPU, and CPU chips Apple Thats all changed. Since 1988, OWC has specialized in 100% Apple-compatible memory upgrades for nearly any Mac. As far as MacBook Air, it is impossible to upgrade the RAM of any model since it is soldered directly to the board to make them thinner and lighter. You can upgrade all Intel Mac mini desktops except for models released between 2014 - 2017 (Macmini7,1) and M1 Mac mini models (Macmini9,1). No MacBook Pro models with “Retina Display” or “Touch Bar” can be upgraded. Although you can upgrade the memory of any 27-inch iMac or Mac Pro, the only MacBook Pro models that are upgradeable are non-retina models released up to 2016.

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