Processor on our Acer TravelMate 8204WLMI we've tested was Core Duo T2500 2.0GHz, and on HP Pavilion dv9056ea was Turion X2 Dual 1.6GHz.
We've found 17" monitor size on Pavilion dv9056ea quite better than 15.4" at TravelMate 8204WLMI.
Acer TravelMate 8204WLMI notebook has better maximum screen resolution - 1680x1050, in contrast to 1440x900 at HP Pavilion dv9056ea.
RAM memory was on both laptops 2GB.
TravelMate 8204WLMI allows maximum 2GB RAM - higher than Pavilion dv9056ea (-1GB RAM).
Video card in use in Acer TravelMate 8204WLMI is X1600 and in HP Pavilion dv9056ea is Nvidia Go 7600.
For some small devices like phones and cameras, you might need bluetooth communication which initially contains in only in HP Pavilion dv9056ea.
Infrared connection has only HP Pavilion dv9056ea.
Only HP Pavilion dv9056ea have firewire needed for some camcorders.
HP Pavilion dv9056ea doesn't have PCMCIA.
If you sometimes travel to destination without broadband connection, you don't have to worry since both laptops have internal modems.
These notebooks have cardreaders inside them.
They don't have DVI for new LCD monitors.
Both notebooks have TV output.
The lack of webcamera in both models makes them bad in video conferencing.
Operating system on Acer TravelMate 8204WLMI is XP Pro and on HP Pavilion dv9056ea is XP Home.
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