Currently Band-in-a-Box will run on just about anything - pretty sure it'll run on a potato. If we program BB to render everything in realtime, then our users who are still running some very old computers will need a faster CPU, more Ram, faster hard drive, etc.
I think that is the mindset of PG, it's like sacrificing development for modern hardware users because of older hardware users ??
If you can have 2 instances of Biab running at the same time there's 14 RealTracks running in RAM.
To try it I opened 2 instances of Biab with 5 tracks each, 120bpm, 192 bars, using 480meg RAM each and 7% CPU each, with i52320 @ 3.0GHz 16GB RAM.
So I don't know, whats the solution ? Biab and Biab Deluxe ???? Look Ma More RealTracks.