SDXC UHS-I, UHS-II, what's the deal?

[GWestphal]

How do I tell if my camera will work with them or not? I have a Canon 60D. Is there a way to know the max speed of the cameras controller?

 

[Sp12]

The 60D's video bitrate is ~45Mb/second. With Magic Lantern most people report they can do 1.3x CBR and not get video stopping from buffer overflow.

So, I imagine the controller can move ~60Mb/second onto a card.