Alienware looks cool
but if you want the exact same laptop (Sager) for cheeper (just not green) then take a look at
powernotebooks.com
that's where i got my laptop
it has radeon 7500 graphics 256mb ram 1.8GHz P4-m and a 40gb 4200rpm hard drive
i use it as a desktop since i fryed my cpu in my athlon system and am too lazy to get another one..
the only thing that i notice as slow on it is the 4200rpm hard drive and sometimes i wish i had gotten 512mb of mem
the only thing that makes me worry is the fact that all the 5400rpm drives are IBM
i havn't heard anyone complaining about problems with their IBM laptop drives tho......
as far as the processor speed goes that is mostly secondary when considering these other components in my opinion
make sure you get a good display they are worth the money