CPU on our Acer TravelMate 4652LMi we've tested was Pentium M740 1.73GHz, and on Acer TravelMate 8204WLMI was Core Duo T2500 2.0GHz.
Screen size on Acer TravelMate 8204WLMI is larger, 15.4 comparing to 15 on Acer TravelMate 4652LMi.
With its declared 1680x1050 maximum screen resolution Acer TravelMate 8204WLMI notebook beats Acer TravelMate 4652LMi with its 1400x1050.
More RAM means less swapping when you run many programs at once and therefore Acer TravelMate 8204WLMI with 2GB RAM is better choise than Acer TravelMate 4652LMi with 0.5GB.
Both Acer TravelMate 4652LMi and Acer TravelMate 8204WLMI on our test had same amount of maximum RAM memory they can support - 2GB.
The RAM memory in use on both laptops is DDR2.
Accumulator on both laptop models should endure for about 4 hours without power supply.
Weight of Acer TravelMate 4652LMi is only 3kg, but Acer TravelMate 8204WLMI is heavier with its 3.6kg.
Graphic card in Acer TravelMate 4652LMi is GMA900 and in laptop Acer TravelMate 8204WLMI is X1600.
Gamers might prefer Acer TravelMate 8204WLMI since it seems it has quite better graphic card with 256MB of its memory.
Acer TravelMate 8204WLMI had more storage for multimedia files on hard drive.
Bluetooth exists only on Acer TravelMate 4652LMi model and you might need it for pictures on your camera or mobile phone.
There are no infrared embedded in Acer TravelMate 8204WLMI.
Lack of firewire in any case.
Both models have PCMCIA built-in needed by some TV cards for laptops.
Note that only Acer TravelMate 4652LMi is able to take advantage of fast internet connections (1Gbit/s).
Cardreader is inside only Acer TravelMate 8204WLMI.
Disadvantage of both is lack of DVI output for connection to some modern monitors.
TV output have both notebooks.
The number of USB ports is 4 on both.
The lack of webcamera in both models makes them bad in video conferencing.
XP Pro is operating system on both.
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