If you’re looking to boost the performance of an iMac --old or new-- there’s no easier way than installing more RAM. Currently maxed out? Some iMacs are actually capable of using more RAM than ...

Upgrading your computer's memory is the quickest and most affordable way to make it run faster. In this CNET How-To, we show you how to add RAM to your iMac.

Depending on which iMac you have, the RAM notch might need to be oriented on the left or right. I'm installing RAM on a 27-inch, late-2013 iMac, so for me the notch needs to be on the right side.

Apple yesterday announced a new 27-inch iMac with faster 10th-generation Intel Core processor options, next-generation AMD graphics, and up to a whopping 128GB of RAM. To max out the RAM at ...

The 27" model, on the other hand, can be equipped with up to 32GB of RAM, and has four user-accessible RAM slots via an "easy-to-access memory panel" on the rear of the machine.