I have had maybe now a couple OR three CBs and never had more than 4G of RAM, and they are all as fast as greased lightning :-).

This Acer CB-315 has 4G and 64G of internal memory.

Now my MacMini has 8G of RAM and a 1TB HD, and IMO, is a PO-Crap in comparison.

I'd replace it with a CHROMEBOX, when the time came, if only you could find one in a nearby Brick & Mortar, like Best Buy or WalMart. WalMart has several listed online, but Pickup is not available on any of them, and I am not risking Porch Pirates.