Overall Windows System Performance Rating

Windows Experience Index for Windows Vista RC1 Ultimate Edition (Build 5600)

Processor : Calculations per second   4.0 AMD Athlon(tm) 64 Processor 3200+ 2.01GHz

Memory (RAM) : Memory Operations per second   4.3 1023 MB 

Graphics : Desktop performance for Windows Areo   4.0

Gaming Graphics : 3D business and gaming graphics performance  4.2

Primary Hard Disk : Disk data transfer rate  2.8

For detailed explanation please read Windows 7 guide What is Windows Experience Index?