Minimum supported system requirements
(
Windows Vista: 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
Processor800 MHz 32-bit (x86) or 64-bit (x64) processor1
System Memory512 MB
GPUSVGA (800x600)
Graphics Memory-
HDD20 GB
HDD Free Space15 GB
Optical DriveCD-ROM drive2
Audio-
Internet-
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).
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but if we all know Microsoft Correctly... and my personal experience and from the magazines (quite a few of them) i read, i think u need atleast 2.0GHz, definately 1GB RAM, a good graphics card, atleast 128MB, for premium use atleast 256MB (DirectX 9/10 capable), DVD ROM bla bla
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to check if u can use it or not
Windows Vista Upgrade Advisor
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Windows Vista Capable and Premium Ready PCs 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.
- DVD-ROM Drive3.
- Audio output capability.
- Internet access capability.