I'm gonna guess not that much - easily doable on a typical desktop. If it were a problem, you can skip recording your emulated machines bootup process, and sim

I'm gonna guess not that much - easily doable on a typical desktop. If it were a problem, you can skip recording your emulated machines bootup process, and simply take a snapshot when you're about to start your QT application. That snapshot probably only takes about 10% extra RAM because most of RAM contents wont change between the snapshot and the live system.