主题：请点评一下这台IBM Thinkpad T42的性价比（补充一下信息） -- 查理五世

另外，有必要多加140$将内存扩展为1G吗？

PC Laptop Recommendation

IBM ThinkPad T42

IBM Price (Product Code: 2373H12): $1,329.00

1.5 GHz Intel Pentium M processor

400 MHz Front Side Bus

512 MB PC2700 333MHz DDR SDRAM expandable to 2 GB

40 GB Hard Disk Drive (5400 rpm)

1 MB L2 Cache

14.1" TFT XGA display (1024x768 with 16.7 M colors)

ATI Mobility Radeon 7500 graphics card (32MB DDR SDRAM)

Gigabit Ethernet

Integrated 802.11b/g wireless ethernet card

Internal 56K V.92 modem

Built-in sound

CD-RW/DVD Combo III Ultrabay Slim Drive (24X/8X/16X/10X)

Integrated Keyboard, TrackPoint and touchpad

2 PCMCIA slots

Ports - 2 USB 2.0, 1 Parallel (IEEE 1284), 1 Serial, 1 S-Video output, 1 VGA, Infrared

Windows XP Professional, NTFS file system

6 cell Li-Ion battery

Weight - 4.9 lbs

Three-year parts and labor warranty; one- year battery

Warranty Information

Desktop Standard Configurations (NetVista M series)

Three-year on-site next business day warranty

Includes parts and labor

Eligible for the IBM Self Maintainer Program

Laptop Standard Configurations (Thinkpad T, X, A and R series)

Three-year depot warranty

Service options include:

IBM EasyServ

IBM Self Maintainer Program

Technology Services (or any authorized IBM service center)

Includes parts and labor. Battery has a one-year warranty.

Service available worldwide (in 128 countries)