I would highly recommend NOT doing the 3GB switch in Windows XP. In short – the 3GB switch was not really meant for Win XP – but Win 2000 “Advanced” Server. Its only because Win XP and Win 2000 Server share “some” of the same codebase that the 3GB switch works. Microsoft also made it available to Win XP (since they share some common characteristics), but only provide it on a “use at your own risk” basis.
That said, Win 2000 Advanced server can do something that Win XP cannot – access more than 4GB of RAM (it can support 8GB). Therefore, in Win 2000 Advanced server, using the 3GB switch comes at really no penalty because there is still plenty of RAM for the OS to access, even though large address aware apps (like AE) can now access 3 GB instead of only 2GB.
This is not the case in Win XP pro. By using the 3GB switch in Win XP pro, an application like AE will eat all RAM allowed to it. This leaves only 1GB for the OS (dramatically less if you have integrated graphics or PCI Express), which may sound like alot, but its not. You will wind up in SWAP/Pagefile hell faster than you can shake a stick, and any performance or preview gain you desired by using the 3GB switch, will not only be gone, but the system may become unstable as well. (as I mentioned Win XP and Win 2000 Advanced server only share “some” of the same code).
Therefore – really long geeky answers aside, if you are in a deadline driven environment, and absolutely need to rely on the stability of your machine – DO NOT USE the 3GB switch!
If you are a performance nut that loves to tinker with systems (like me) and system stability be damned….go for it! (just don’t use our Nucleo product and the 3GB switch at the same time!)
Steve
GridIron Software Inc.