Comparisons & alternatives · Drives and hardware choices
Is an external SSD a good substitute for buying a Mac with more storage?
Short answer: Often, yes. Internal storage usually can't be upgraded later, so an external SSD is the flexible way to add room — but its files are only there while it's plugged in. Keep on-the-go files inside and move big desk-bound folders out.
For many people, yes — with one honest trade-off. On most Macs the internal storage can't be upgraded after you buy it, so the choice is made at purchase. Internal storage is always there and is the fastest; an external SSD is a separate purchase you can upgrade or replace any time, and it can travel between Macs.
The trade-off is availability: anything on the external drive is only there while it's plugged in. That's why it works best for big things you use at a desk — media libraries, projects, virtual machines, developer data, large apps — while day-to-day files stay inside.
Storage Studio makes that split painless: it moves the big folders and apps to the drive and leaves links, so nothing changes in how you open them. Size your internal drive for what you need on the go. See External drives.