Oh, so this isn't Hyper-V, I guess. I thought Microsoft was giving away that, too. Andrew On Sun, April 28, 2013 6:02 pm, PhotoRoy6@xxxxxxx wrote: > > I have Windows 7 with XP mode. When you go into XP mode you can only > access the amount of RAM that XP can which is 4 Gigs. Windows 7 can access > up to 192 Gigs but I have only 12 Gigs. You can only run one OS at a time > with the Windows 7 (Pro) version I have. Roy > > > > > In a message dated 4/28/2013 8:28:23 P.M. Eastern Daylight Time, > asharpe@xxxxxxxxxxxxxxxx writes: > > What is the claimed degradation in perforce for running multiple > versions of Windows simultaneously under Virtual PC? I think, unless you > have a fair bit of memory already (which means you are running some 64bit > version of Windows), you will find a significant performance penalty. > > Andrew > > > > >