CPU on our Sony Vaio VGN-AR190G we've tested was Core 2 Duo T7200 2.0GHz, and on Acer Travelmate 2312LM was Celeron M360 1.4GHz.
Vaio VGN-AR190G monitor screen with its 17 inch we like more than 15 inch screen at Travelmate 2312LM.
Sony Vaio VGN-AR190G laptop has better maximum screen resolution - 1920x1200, in contrast to 1024x768 at Acer Travelmate 2312LM.
More RAM memory we've got in Sony Vaio VGN-AR190G - 1GB. Acer Travelmate 2312LM came with 0.25GB.
Both Sony Vaio VGN-AR190G and Acer Travelmate 2312LM on our test had same amount of maximum RAM memory they can support - 2GB.
Graphic is built around Nvidia Go 7600GT on Vaio VGN-AR190G, but graphic on other laptop is built using i852GM DVMT.
We like that video card on Sony Vaio VGN-AR190G have its own video memory (256MB) and therefore its faster since it doesn't use main memory and mainboard controller is less loaded.
More storage for multimedia were available at Sony Vaio VGN-AR190G (greater space on hard disk).
Fast hard disk (5400 rpm) on Sony Vaio VGN-AR190G beats another model.
For some small devices like phones and cameras, you might need bluetooth which initially contains in only in Sony Vaio VGN-AR190G.
Infrared connection has only Sony Vaio VGN-AR190G.
No firewire connection on model Acer Travelmate 2312LM.
Very fast internet connection (1Gbit/s) supports only Sony Vaio VGN-AR190G.
None has DVI output so you cannot connect them to some new TFT monitors.
Sony Vaio VGN-AR190G only has TV output.
Only Vaio VGN-AR190G has TV input.
Wireless is very useful nowadays especially in hotels and Acer Travelmate 2312LM has big disadvantage in lack of wireless.
Web camera is built in Sony Vaio VGN-AR190G (the another hasn't any) and that is useful for video conferencing.
Operating system is XP Media Center on Sony Vaio VGN-AR190G and none on Acer Travelmate 2312LM.
Only Sony Vaio VGN-AR190G has special software pack : Works 8.5.
Special adventages of these laptops are : two hard disks of 120 in RAID for Sony Vaio VGN-AR190G and for Acer Travelmate 2312LM.
More
Laptops comparisons:
Sony Vaio VGN-AR190G vs Gateway MX6912.
Gateway MX6931 vs Sony Vaio VGN-FE28B.
Gateway MX6446 vs Toshiba Satellite M60-182.
Gateway MX6931 vs Toshiba Satellite M60-182.
HP dv9008nr vs Sony Vaio VGN-FE31Z.
Gateway MX6931 vs Acer TravelMate 4602WLMI.
Acer Aspire 9512WSMi Gamer vs Samsung X11-T5500 CeSeba.
Gateway MX3414 vs Acer TravelMate 8204WLMI.
Gateway MP8708 vs Samsung M700-1860.
Sony Vaio VGN-FE770G vs Acer TravelMate 4072NWLMi.
Asus Z5303JC vs Fujitsu-Siemens Amilo A1655G.
Sony Vaio VGN-FE770G vs Asus Z5303JC.
Gateway MX3414 vs Fujitsu-Siemens Amilo M3438G.