document: Laptops zip to 2 GHz-plus Intel 's Pentium 4-M processor has reached the coveted 2-GHz mark , and speed-hungry mobile users will be tempted to buy a laptop with the chip . However , while our exclusive tests found 2-GHz P4-M notebooks among the fastest units we 've tested , the new models failed to make dramatic gains compared with those based on Intel 's 1.8-GHz mobile chip . Since 2-GHz notebooks carry a hefty price premium , buyers seeking both good performance and a good price might prefer a 1.8-GHz unit instead
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