Tested real live - this time with my notebook. Just completed my new music from composition to arrangement to recording to production. All done on a notebok (Sony Vaio Z56 C2D 2.8GHz, 6GB RAM, internal HD 7200rpm, external HD 7200rpm only for sample streaming). Audio interface - Echo indigo DJ. Midi interface - M-audio 1x1. DAW = Sonar X1 (yes, the newest DAW!). Kontakt 3.5.
I have 10 midi tracks (not too many this time), but gigantic samples (loading Akoustic Piano, KHSO TVEC violins x2 instances, MM-bass, Sample Modeling Tenor Sax, SD2...and others). During midi playback, I got some pops and clicks. Getting into trouble with my HD. CPU and RAM usage not maxed out. Shows that the samples are really taxing my external HD (which by the way is a Lacie 7200rpm USB 2.0). This never happened on a desktop - which by the way is a Quad Core 2.5 GHz with 8GB RAM - more powerful and so no justifiable comparison can be made.
Midi tracks bounced into 7 separate audio tracks. This is into the internal HD. Then came the crazy thing. Sonar X1 has this beautiful new Pro-channel (basically a channel strip). I basically applied tube saturation, EQ, compression, reverb, and various other things (Guitar Rig x2 - one into electric guitar and the other into the e-bass) all over the place. Not to mention I applied the Cakewalk PX64 percussion strip onto the SD2. Each audio track has it's own separate plugins. Playback - no pops and clicks or any problem whatsoever. All the way to final mix down and rendering into wave file.
That's only 7 simultaneous audio tracks, but a whole lot of plugins. I'm pretty sure I can go beyond 10 + applying plugins without problems.