Recently I swapped the HDD in my laptop.
I was getting frustrated with the storage being too small and the speed being too slow.
I’d never paid much attention to HDD speed before, but replacing it from 4,300 rpm to 5,300 rpm made a noticeable difference. Significantly faster.
This laptop is from 2001, and I was starting to feel like its speed was reaching its limits — but it still has plenty of life left. Going to keep using it for a while.