Acer TravelMate 4072NWLMi went with Pentium M740 1.73GHz central processor unit built in, and Sony Vaio VGN-FE28B with Centrino Duo T2300 1.66Ghz.
Chipset inside Acer TravelMate 4072NWLMi is Intel 915GM but in Acer TravelMate 4072NWLMi is Intel 945PM Express.
The same 15.4" screen size is on both Acer TravelMate 4072NWLMi and Sony Vaio VGN-FE28B.
For customers whose need more RAM we've found Sony Vaio VGN-FE28B with its 1GB better than 0.5 GB on Acer TravelMate 4072NWLMi.
Acer TravelMate 4072NWLMi could be described as a bit less heavier with its 2.75kg, comparing to 2.95kg .
Video card in use in Acer TravelMate 4072NWLMi is Intel 915GM and in Sony Vaio VGN-FE28B is Nvidia Go 7400.
More storage for multimedia were available at Sony Vaio VGN-FE28B (greater space on hard disk).
Unfortunatly, any of these doesn't have bluetooth embedded which might be significant disadvantage.
Infrared isn't available on both models and therefore they cannot communicate with some small devices.
Keep in mind that these models don't have firewire which you might need by some video and storage devices (although rarely).
Acer TravelMate 4072NWLMi doesn't have PCMCIA.
Cardreader is inside only Sony Vaio VGN-FE28B.
Disadvantage of both is lack of DVI output for connection to some modern TFT monitors.
Each notebook has 3 USB ports.
Operating system on Acer TravelMate 4072NWLMi is Linux and on Sony Vaio VGN-FE28B is XP Media Center.
Only Sony Vaio VGN-FE28B has some additional software : Adobe Acrobat Elements 7.0.
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