What do the letters mean/standfor in sm_10 and sm_11 ?

Hello,

Basic little question:

What do the letters sm mean/standfor in sm_10 and sm_11 and so forth ?

It has something to do with compute capability and “real architecure” but can’t find anything about it in cuda c guide or ptx 2.3 guide…

Bye,
Skybuck.

sm = streaming multiprocessor