Mr. Internet Tough Guy?
I kind of like that title, even though that's not what I was getting at.
I said nothing about SX3 not working with multiple cores, just made a simple remark.
OP, if you'd do your own research, you wouldn't have needed to make this thread.
Multiple core processors, in the scope of consumer computing, are still pretty new. I don't have a machine with multiple cores yet and I probably do about 200x more work on the computer in a day than you do in a week. What pisses me off about newer users is that they buy into the hype of "if you want to do this, you WILL need all this power and then some." Until 3-4 years ago I was doing all of my recordings on an 800 mhz machine with a gig of RAM. The only reason I upgraded to an Athlon 64 machine was because there was a sale on the processors (this was about a month after they were released) and I figured it couldn't hurt to have a faster machine, just in case the "more power" hype was real. Well, it turns out that little changed with the way I record things and I probably could have stuck with my 800 mhz machine and gotten the same result out of every session. I haven't had to freeze any tracks until recently, when I was doing some Drumagog replacement and couldn't stand it defaulting to whatever it wanted upon opening the session. The reason being is: I take the time to get my mics placed where they will give basically the sound that I want, which in turn makes it so I don't have to use 10 plugins per track to get decent quality sound. Maybe you ought to give it a try too. Anyway, thanks for the rep, and I hope you get some help soon for your obvious autism.
Edit:
Here's a tip for research, google "cubase sx3 quad core" and see what the first result is.