As I’ve spotlighted over the past month, the best way to dramatically speed up an older Mac is to replace its old hard drive with a new solid state drive (SSD). The process is super-easy on MacBooks and Mac Pros, surprisingly manageable on iMacs, and challenging on Mac minis, yielding 3X to 5X speed boosts. But there’s another option that can speed things up with relatively little effort or expertise: upgrading your Mac’s RAM.
RAM upgrades are easy and cheap. You can expect to pay $90 or less for enough (Mac-safe) RAM to run OS X Yosemite without hiccups, or $180 for enough RAM to guarantee you won’t need more for years. Installing RAM generally doesn’t void your Mac’s warranty, and except for several models, the only tool you’ll need is a small screwdriver. Below, I’ll walk you through your best options.