As Windows Vista, Windows Server “Longhorn” and Windows Internet Explorer 7 are all beta products, it is difficult to work out what the final system requirements are needed to run them properly. However, from various Microsoft sources, I’m happy to produce a preliminary idea of what you might need on your computer to get either Windows Vista, Windows Server “Longhorn” and Windows Internet Explorer 7 running properly. Also please note, that Windows Vista Starter Edition will be distributed as Windows XP Starter Edition did - to emerging economies and will not be sold in Europe, Australia and North America.

 Windows Vista (Ultimate Edition)
This is the most feature-packed version, this is the maximum of what you should need for anything below Ultimate Edition.
32/64-bit processor, 2.4Ghz minimum AMD or Pentium 4
512MB memory minimum
30GB minimum, anything more than 60GB should be fine.
128MB graphics card minimum, that qualifies for LDDM drivers (see specific manufacturers)
32MB sound card minimum
Monitor that views 1024×768 desktop resolutions at minimum
TV tuner card (optional)

 Windows Vista (Home Basic Edition)
This is the least feature-packed version, this is the minimum of what you should need for anything above Home Basic Edition.
32-bit processor, 2.0Ghz minimum AMD or Pentium 4
512MB memory minimum
30GB minimum, anything more than 60GB should be fine.
128MB graphics card minimum, that qualifies for LDDM drivers (see specific manufacturers)
Onboard sound card minimum
Monitor that views 1024×768 desktop resolutions at minimum

 Windows Server “Longhorn”
This is more difficult as by standard, no Glass is used and also the release date is further away.
32/64-bit processor, 3.0Ghz minimum AMD or Pentium 4, dual core optional
1GB memory minimum
60GB minimum (file servers: 200GB minimum, but replication needed to other servers if any less)
Onboard graphics card minimum (Aero Glass: 128MB graphics card minimum with LDDM drivers)
Onboard sound card
Network capabilities - wireless or Ethernet recommended
Monitor that views 1024×768 desktop resolutions at minimum

 Windows Internet Explorer 7 (for Windows XP SP2/Windows Server 2003 users)
It won’t not install if it’s not up to spec, but it’s recommended that you have a machine the same or better below.
32/64-bit processor, 500Mhz minimum AMD or Pentium 2
Windows XP Home/Professional/Tablet Edition SP2 or Windows Server 2003 Standard/Enterprise/R2
128MB memory minimum
10GB minimum, anything more than 20GB should be fine.
Onboard graphics card minimum
Onboard sound card minimum
Monitor that views 1024×768 desktop resolutions at minimum