CNET también está disponible en español.

Ir a español

Don't show this again

Toshiba Libretto U100 review: Toshiba Libretto U100

The Toshiba Libretto U100 runs on a full version of Microsoft Windows XP Professional. Like most business-minded systems, it ships without a costly productivity suite, though the basic Microsoft Works 8.0 is preloaded on the system. Also in the software bundle are Toshiba's excellent utilities, including programs for setting power levels and zooming in on a portion of the screen (especially helpful given the U100's small dimensions), along with Microsoft Office OneNote and a 30-day trial of McAfee VirusScan, among other programs.

The Libretto U100 relies on a mix of old and new technology, including an ultra-low-voltage 1.2GHz Pentium M processor and a superslim 60GB hard drive. But the hard drive spins at a slow 4,200rpm, and the system uses Intel's previous-generation 855GME chipset and graphics accelerator. Our test system came with 512MB of 333MHz memory chips; it can expand up to only 1GB of RAM, which will be an immediate turn-off to some corporate buyers. Those components packed a performance punch on CNET Labs' mobile benchmarks. The little Libretto U100 finished a scant 3 percent behind both the Dell Latitude X1 and the Sony VAIO VGN-T250--though the Dell has a slower, 1.1GHz processor. We feel certain that the U100 will not let down workers in the field, considering that its battery pack lasted 4 hours, 48 minutes in our drain tests. Though that's more than an hour short of the VAIO VGN-T250's amazing 6 hours, 25 minutes, it's much better than the Latitude X1's 3-hour battery life. Those wanting a full day of work can either adjust the power management settings or get a second battery for $149.99.

Oddly, for a machine aimed at corporate roamers, the U100 comes with a skimpy one-year warranty with mail-in service. You can extend it to a more appropriate three years for a sensible $149; three years with onsite service costs $249. Toshiba's support Web site continues to provide just about everything you'll need to help keep the Libretto U100 running smoothly. Along with setup tips, diagnostics, and a variety of downloads, there's a great chat room to figure out what's going on inside the computer and fix it. The company's 24-hour, toll-free hotline is augmented with staff who answer questions via e-mail.

Mobile application performance
(Longer bars indicate better performance)
BAPCo MobileMark 2002 performance rating  

Battery life
(Longer bars indicate better performance)
BAPCo MobileMark 2002 battery life in minutes  

Find out more about how we test Windows notebooks.

System configurations:
Dell Latitude X1
Windows XP Professional; 1.1GHz Intel Pentium M 733; 512MB DDR SDRAM 400MHz; Intel 915GM/GMS, 910GML Express 128MB; Toshiba MK6006GAH 60GB 4,200rpm

Sony VAIO VGN-T250
Windows XP Professional; 1.2GHz Intel Pentium M 730; 512MB DDR SDRAM 333MHz; Intel 855GME Graphics Controller up to 64MB; Toshiba MK6006GAH 60GB 4,200rpm

Toshiba Libretto U100
Windows XP Professional; 1.2GHz Intel Pentium M 753; 512MB DDR SDRAM PC2700 333MHz; Intel 855GM (up to 64MB); Toshiba MK6006GAH 60GB 4,200rpm

Best Laptops for 2020

All best laptops