score:5
There's no train, yet, between Thailand and Cambodia. That leaves you with a bus. If you're going from Bangkok, that means you'll cross at Poipet. Where the eVisa is accepted. If you're wandering around, there are a couple of other options.
Now, as for the list of places where it is accepted, it will appear when filling out the form: the form asks you where you plan to cross, and there's a popup menu.
EDIT:
Timatic (checked via Emirates) says:
Which is complete bull. I've done day trips to Poipet, on a single-entry eVisa, where I spent more time on the road than inside Cambodia.