4GB is actually more usable than you'd think; most web browsers have performance settings that make the experience just fine with even a hundred tabs on low-end

4GB is actually more usable than you'd think; most web browsers have performance settings that make the experience just fine with even a hundred tabs on low-end devices (Chromium gets more points than Firefox on this for its toaster mode), and outside of web browsers, there's not much else to worry about. If you set it up with one of the 'in-RAM compressed swap' solutions available like you should, you probably won't ever notice it, but even then it's still really fairly comfy.