Windows Vista Ultimate:

09.03.09

Processor-
 Required: 1 GHz or faster processor
Recommended: 1.5 GHz 32-bit (x86) or 64-bit (x64) processor

Memory-
Required: 512 MB of system memory
Recommended: 1 GB of system memory

Hard Disk-
Required: 40 GB hard drive with at least 15 GB of available space
Recommended: 80 GB hard drive with at least 15 GB of available space

Drive-
Required: DVD-ROM drive

Display-
Required: Support for Super VGA graphics
Recommended: Support for DirectX 9 graphics with WDDM Driver, 128 MB of graphics memory (minimum), Pixel Shader 2.0 in hardware, and 32 bits per pixel
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