IF you want to run Vista, you have got this minimum computer:

• A modern processor (at least 800MHz).
• 512 MB of system memory.
• A graphics processor that is DirectX 9 capable.

But if you want to be sure that you can run Vista decently you have got this computer:

• 1 GHz 32-bit (x86) or 64-bit (x64) processor.
• 1 GB of system memory.
• Support for DirectX 9 graphics with a WDDM driver, 128 MB of graphics memory (minimum), Pixel Shader 2.0 and 32 bits per pixel.
• 40 GB of hard drive capacity with 15 GB free space.
• DVD-ROM Drive.
• Audio output capability.
• Internet access capability.

I’m glad that i have a new pc which is compatible with Vista, but i’m not sure if i’m going to upgrade!! We will see about that later!

Source: Get Ready