Beneath the HP Compaq Business Notebook Nc6000's mild-mannered exterior lies a 5.8-pound powerhouse. Its stupendous battery life of 6 hours and 23 minutes is one of the longest we've seen. And it's no slouch: Equipped with a 1.6-GHz Pentium M processor and 512MB of RAM, the Nc6000 earned an impressive PC WorldBench 4 score of 125.