They're growing faster than average and very well, you can't expect any faster growth than that for sure. How many nodes? I've had a few grow at about the same rate but not many and most of the time 4 or 5 nodes is all I'll get before they're flowering, sometimes only 3. Those ones usually turn out to be dwarfish with one large main cola and 6 little satellite colas. I'm about to trim and jar one now that grew that way, NYC Diesel autofem from Expert Seeds.