Toshiba has un-wrapped two new notebooks, addressing important segments of the notebook market with a Media Center desktop replacement notebook and a more portable system based on Intel's Centrino technology.

The new Satellite P25-S670 comes with Microsoft's Windows XP Media Center Edition, and a 17 inch widescreen display. Toshiba expects consumers will watch movies and store their digital media on this notebook, it said in a release.

Desktop replacement notebooks helped to resurrect the PC market in 2002 and 2003, as consumers flocked to replace their older desktops. They were attracted by the ability to get performance similar to a desktop in a package that could be carted around the house from room to room.

The P25-S670 is the most powerful system in Toshiba's multimedia notebook lineup, but it weighs a hefty 4.5kg. It comes with Intel's older desktop processor technology based on the Northwood core, rather than the recently introduced Prescott chip.

Analysts and reviewers have noted that Prescott's performance is not all that different than that of the older Pentium 4 chips at the current clock speeds. As Intel introduces faster models later this year, that is expected to change.

The P25-S670 costs $2,699 (around £1500) with a 3.2GHz Pentium 4 processor, 512M bytes of DDR (double data rate) SDRAM (synchronous dynamic RAM), an 80GB hard drive, a DVD-RAM/-RW/CD-RW multifunction optical drive, a GeForce FX Go5700 graphics card from Nvidia with 128MB of video memory, and an integrated 802.11a/802.11g wireless chip.

For users who need more mobility, Toshiba added the Satellite M25-S320 to its lineup. This notebook comes with Intel's Centrino package of the Pentium M processor, a mobile chipset, and the Pro/Wireless 2200BG chip.

The M25-S320 is a more manageable 2.8kg, but that's still fairly heavy for the needs of business travelers. Instead, this notebook is designed for consumers and students who need a lighter notebook but still want to watch movies on its 15.4inch widescreen display and burn CDs, Toshiba said.

It costs $1,799 (£1000) with a 1.5GHz Pentium M processor, 512M bytes of DDR SDRAM, a 60G-byte hard drive, a DVD-ROM/CD-RW optical drive, Nvidia's GeForce FX Go5200 with 32M bytes of video memory, and Intel's 802.11g wireless chip.

Both notebooks are available immediately in the US through Toshiba's Web site. UK pricing and availability has not yet been announced.