To use MIMO routers do you need a MIMO network card too?

Question

I understand that MIMO routers are backwards compatible with non-MIMO network cards, or so I've read. But for the extra speed and range increase associated with MIMO routers do you need a MIMO network card to get these boosts? I have seen some MIMO network cards available and are these needed?

Answer 1

MIMO (I think) stands for Multiple In Multiple out

Probably not if my assumption is correct.