If you have a recent model 21.5-inch iMac and are looking to boost its performance, OWC now offers a 64GB RAM upgrade kit. The kit is compatible with 2017 and later models of the smaller iMac, including the Retina 4K display model …

This allows 21.5-inch iMac owners to max out their machines.

As you’d expect, the 64GB RAM upgrade kit isn’t cheap, at $899 for the complete kit (with tools included) or $895 for the RAM on its own – but it still represents a 36% savings over Apple’s own pricing. OWC will also let you trade in your old RAM to further boost savings. If you’re upgrading from 32GB, you’ll get $180 back, and you have 60 days to mail in the RAM to receive your rebate check.

If you’re upgrading from 8GB or 16GB, a 32GB kit is also available for $288.88.

However, the company does caution that DIY upgrades are not for the faint-hearted, even with the help of a video (below).

The latest Mac mini also falls into the non-trivial category where RAM upgrades are concerned, but we found that it was do-able with a little patience and know-how. A 64GB RAM upgrade is one of the options here too – check out our how-to guide.

Finally, if you have the 2017 5K iMac and are looking to upgrade the RAM in that, you’ll be pleased to know that one is extremely straightforward.

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