I've been using Atom since a fairly early version, upgrading with each release, and it has improved a lot. My guess is that SSD makes the biggest difference, th

I've been using Atom since a fairly early version, upgrading with each release, and it has improved a lot. My guess is that SSD makes the biggest difference, though: startup is near instant on my current MacBook, but can visibly struggle on my older work iMac if there are Windows VMs hitting the (spinning rust) HDD.