The Best RAM for iMac: A Comprehensive Guide


For many professionals and computing enthusiasts, the iMac is the machine of choice. It’s powerful, beautiful, and optimized for everything from productivity tasks to gaming. But, even the best computer can be turned into a veritable powerhouse with a simple RAM upgrade. In this article, we delve into everything you need to know about the best RAM for iMac, made to maximize performance.

**What Is RAM and Why Is It Important for Your iMac?

Random Access Memory (RAM) is an integral component of the computer system. It temporarily stores information that is currently being processed, enabling swift data access. With more available RAM, your iMac will be equipped to run more applications simultaneously without being susceptible to slowdowns.

Understanding iMac RAM Specifications

Before proceeding with the purchase, it’s vital to understand iMac RAM specifications to ensure compatibility. Typical RAM specifications that you should focus on include DDR (Double Data Rate), capacity (measured in GB), and speed (measured in MHz).

Which RAM Is Best for Different iMac Models?

There is no ‘one-size-fit-all’ when it comes to iMac RAMs. The best one truly depends on the model of your iMac. Here, we measure the optimal RAMs for the most popular options:

Best RAM for iMac (2020 and 2021 models)

CORSAIR’s Vengeance Performance Memory Kit is a great choice for the 2020 and 2021 iMac. It’s a 128GB DDR4 memory with a speed of 2666MHz, designed for high performance on Intel and AMD motherboards.

Best RAM for iMac Pro (2017 model)

For iMac Pro users, the OWC 64GB RAM is a reliable option. It’s DDR4 ECC Memory with a speed of 2666MHz boasting OWC’s lifetime warranty and an easy installation process.

Best RAM for iMac (2017-2019 models)

Owners of 2017-2019 iMac models should consider the Timetec Hynix IC 32GB KIT. Available in a pair of 16GB modules, it’s a DDR4 2400MT/s SODIMM designed for Apple iMac 18,3 models.

Best RAM for iMac Retina 5K (27-inch model, 2015)

The Crucial 16GB Kit is excellent for the iMac Retina 5K. It’s a pair of 8GB DDR3 1866 MT/s RAM modules that comes with a limited lifetime warranty.

Why Should You Upgrade Your iMac Memory?

Upgrading your iMac memory allows your system to handle more concurrent tasks, load programs faster, and operate with enhanced efficiency.

Choosing the Right RAM Vendor

When selecting a vendor for your RAM, it’s crucial to prioritize companies with a proven track record of manufacturing high-quality, reliable products, like Crucial, Timetec, OWC, and Corsair.


When it comes to boosting your iMac’s performance, a RAM upgrade can make all the difference. Understanding your needs, being aware of the specifications, and choosing the best RAM can dramatically enhance your computing experience. Keep in mind that the best RAM for your iMac depends on your model and its specifications. Be sure to verify these aspects with the RAM vendor before purchase.

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