

Step 1: Power down your 27-inch 5K iMac and unplug all cables from the chassis, including the power cable.
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Contact Apple, or an authorized service center to upgrade the RAM on your 21.5-inch iMac (2017+ models only). Note: Please be aware that this tutorial is for the 27-inch 5K iMac (2019), 21.5-inch models feature unsoldered RAM, but the memory is not considered to be user-replaceable by Apple.
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Subscribe to 9to5Mac on YouTube now for more videos How to upgrade 2019 27-inch 5K iMac RAM OWC sells various memory configurations that meet the aforementioned criteria. Of course, you don’t have to use OWC memory, but their memory has been verified to work with the 2019 (Model ID 19,1) 27-inch 5K iMac, and it’s backed by a lifetime warranty. I highly recommend that you avoid upgrading memory during the build-to-order configuration process, and use compatible third-party memory from a reputable dealer.Īpple charges a lot of money for RAM upgrades Requirements for RAMįor the 2019 27-inch 5K iMac, Apple notes that you’ll want to use memory modules that meet the following specifications: That’s insane, and really shows how crazy Apple’s memory prices continue to be. OWC sells its 128GB upgrade kit - which provides users with DOUBLE the RAM - for $1099, or just $99 more than Apple’s 64GB configuration. Save lots of money with a DIY RAM upgradeĪ 64GB memory upgrade, the maximum amount of memory configurable using Apple’s build-to-order tool, costs $1000. Hence, if you wish to upgrade your RAM, you’ll want to configure your iMac with the base 8GB amount, and buy compatible aftermarket RAM modules. OWC sells several RAM upgrade options for the 2019 5K iMac, and it was willing to send me a 128GB sample to test on video. In fact, Apple notes that the machine supports a maximum of 64GB of RAM in a 4 x 16GB SO-DIMM module configuration, but it turns out that users wishing to upgrade can go beyond that number.Īs initially discovered by OWC, the 2019 27-inch 5K iMac can support up to 128GB of RAM via a 4 x 32GB SO-DIMM module configuration. Watch our video tutorial for a step-by-step 5K iMac memory upgrade guide.Īlthough the 2019 iMac can support up to 128GB of RAM, Apple restricts its build-to-order configurations to a maximum of 64GB of RAM. The good news is that even if you’re not interested in maxing out to 128GB of RAM, it’s incredibly easy to upgrade your 5K iMac’s memory, and you can save a whole lot of money in the process of doing so. For the first time, it’s now possible to upgrade the 27-inch 5K iMac with 128GB of RAM, although you’ll need to do so using third-party memory suppliers. In addition to the CPU and GPU, there’s another key upgrade element that got some love this year: Memory, and lots of it.
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Along with new 6-core and 8-core Intel options for faster CPU performance, new Radeon Pro Vega GPUs provide faster graphics.

Apple’s long-awaited refresh of the iMac lineup finally happened, and it brought about incremental, but nonetheless worthwhile, enhancements to the lineup.
