Okay i think space is fine but land is a problem my friend and myself have tryed this on a land battle the specs were
amd 3.2 p4 2.0
2ghz ram 1ghz ram
Both of us were using broadband 2 meg now connections were fine with the game set at max settings the fps went from 20 fps for me down to 10-12 when things got hectic his went from 30 to 17-19.
With the graphics set to the lowest the results were pretty much the same although the fps would rise quicker when you scrolled away from a lot of units.
Have to say land is not optimized for hardware at all, this is why i and as other people have mentioned that theres is next to nothing in noticable performance when you adjust the settings.
This is annoying for me as i can run bfme2 max graphics 1200-960 faster than i can run EAW on lowest settings on the land maps.