Minimum recommended specs call for:
*

1 GHz 32-bit or 64-bit processor
*

1 GB of system memory
*

16 GB of available disk space
*

Support for DirectX 9 graphics with 128 MB memory (to enable the Aero theme)
*

DVD-R/W Drive
*

Internet access (to download the Beta and get updates)

con esto te debe andar solamente en 800x600 y escala de grises :S