64-Bit Windows? Wait for Longhorn
 

After more than 18 months of delays, the shipping version of Microsoft's Windows XP Professional X64 Edition operating system is finally here. But even if your PC has a 64-bit CPU, we advise waiting for Longhorn, Microsoft's next-generation Windows due out in 2006, unless you work with data-intensive programs such as video rendering, 3D animation, or CAD and engineering.

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