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 VMware vs. Virtual PC

" Virtual machine software can fool an operating system into thinking it's running on its own hardware, when in reality it's simply mooching off unused CPU cycles and RAM. Since the OS is running on its native platform, no emulation is necessary; virtualization allows it to run with little cost to CPU performance. However, since display and I/O functions are mapped to slightly different components (a window or a virtual partition, for example), they incur a slight performance hit."
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 (Submitted by Noel Tue Aug 3, 2004 )

  


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