Minimum supported system requirements
PCs that meet the minimum supported system requirements will be able to run the core features of Windows Vista with the basic user experience.
Windows Vista Minimum Supported System Requirements:
Processor 800 MHz 32-bit (x86) or 64-bit (x64) processor
System Memory 512 MB
GPU SVGA (800x600)
Graphics Memory -
HDD 20 GB
HDD Free Space 15 GB
Optical Drive CD-ROM drive2
1 Processor speed is specified as the nominal operational processor frequency for the device. Some processors have power management which allows the processor to run at a lower rate to save power.
2 The CD-ROM may be external (not integral, not built into the system).
A New Vista PC
A new PC that carries the Windows Vista Capable PC logo can run Windows Vista. All editions of Windows Vista will deliver core experiences such as innovations in organizing and finding information, security, and reliability. All Windows Vista Capable PCs will run these core experiences at a minimum. Some features available in the premium editions of Windows Vista—like the new Windows Aero user experience—may require advanced or additional hardware.
A Windows Vista Capable PC includes at least:
A modern processor (at least 800MHz1).
512 MB of system memory.
A graphics processor that is DirectX 9 capable.
Windows Vista Premium Ready PCs
To get an even better Windows Vista experience, including the Windows Aero user experience, ask for a Windows Vista Capable PC that is designated Premium Ready, or choose a PC that meets or exceeds the Premium Ready requirements described below. Features available in specific premium editions of Windows Vista, such as the ability to watch and record live TV, may require additional hardware.
A Windows Vista Premium Ready PC includes at least:
1 GHz 32-bit (x86) or 64-bit (x64) processor1.
1 GB of system memory.
Support for DirectX 9 graphics with a WDDM driver, 128 MB of graphics memory (minimum)2, Pixel Shader 2.0 and 32 bits per pixel.
40 GB of hard drive capacity with 15 GB free space.
Audio output capability.
Internet access capability.
To ensure your PC can run Windows Vista check out: http://www.microsoft.com/windowsvista/getready/upgradeadvisor/default.mspx