[OP here]

4096 colours. :-)

Otherwise, yes, pretty much. I bought a 2nd hand A310 in 1989 and it easily outperformed the fastest machines my employer sold (e.g. the IBM PS/2 Model 70-A21, a blazing 25MHz 80386DX with 64 KB of secondary cache) by a factor of about 8×.

Given that the state of the PC OS art at that time was MS-DOS 3.3, which very few people bothered to put Windows 2 on top of, Acorn's RISC OS 2 was astonishingly advanced, too.