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I'm one of today's best-selling computer book writers, with more than 15 million books in print.

This website keeps you up-to-date on my books, and your computers. Each week, I answer a reader's question on-line.

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Tag: Dell Precision M6400 Mobile Workstation

Why does the Windows Experience Index differ in Windows Vista and Windows 7?

Q: Under Vista Ultimate, my computer earned a Windows Experience Index of 5.9. (I expected that because I own a Dell Precision M6400 mobile workstation that’s maxed out in performance. When I did an upgrade install of Windows 7 RC (Build 7100), I was disappointed to see the Performance Experience Index remain at 5.9. I […]