Yeah. It's pretty cool. I loaded all the seps of the rock song I have with Curtis, played it and in the bottom right hand corner it shows the 4 cpu's alternating. the only cpu that showed anything was #2
1, 3, & 4 were at 0 and 2 was running at about 1%. It's not a lot of seps but it sure has no problem. I can still throw a couple more gigs of ram in. I have 2gigs for now. Btw, the Sonar training video is a big help. Also I started out on Cakewalk when I first started to record so that helps. I'll be using Sonar from now on.