it would be better to run cubase 64 bit. If you get a meaty session going on and the DAW hits the 3GB mark, it will literally just shut down, crash out of nowhere. I found out the hard way with Sonar using SD2.0, as soon as Superior would load up enough to bring the total to 3GB, that was it, everything would be gone, and it took me forever to discover running out of memory becuase of my DAW.