You're outgrowing 16GB when tasks take noticeably longer.

Yes, there are clear signs.

Open Task Manager (Windows) or Activity Monitor (Mac) and watch memory usage. If it’s consistently over 80% during normal work — say, a browser with 10 tabs, Slack, Spotify, and a couple of office docs — you’re maxing out. The real giveaway is when your system starts using the swap file (virtual memory). You’ll feel it as stuttering, lag when switching apps, or a fan that never shuts up.

16GB was plenty three years ago. Now browsers alone can eat 8GB. Add a video call, a spreadsheet, and a half-decent photo editor, and you’re paging to disk. That’s the bottleneck. If you reboot and the problem comes back within an hour of opening your usual apps, you need more RAM.

Another sign: you run virtual machines, Docker containers, or anything with large datasets. Those will choke on 16GB. Even heavy gaming can tip over if you keep Discord and Chrome open in the background.

If you never see memory usage above 70% and everything feels snappy, stick with 16GB. But if you’re wondering