Other than lower voltage requirements,
the mobile Celeron-400 is not that much
different than the desktop version. The performance score for both
flavours should be about the same.
For general business applications (most common on laptops), the K6-III
380 provides better overall
performance. Only if you are planning to run largely floating-point
intensive apps (games, voice-recognition, etc.-- less common on a laptop)
would the Celeron be a better choice.
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the use of the information or advice provided here. All responses are
based on the best available information at the time of writing. However,
users of this information who wish to apply it to their computer
situations do so at their own risk.