< begin, the little celeron that could...
i went from a celeron to an athlon, but the jump was too big (400mhz celeron to 1.53athlon xp) to accurately compare the two. but i'll tell you my little HP pavilion celeron was a WORKHORSE. this was a computer i got in '98, that i ended up maxing out (GO 256mg ram!!), dual video, dvd player - and for a while it just took anything i threw at it. till photoshop 7, anyway.
i later bought a Toshiba laptop with a celeron.. when i took that to work and started using it everyday with graphics and video editing, it started to crap out real fast. for the same price a year later, i bought an HP laptop with a P4 that can serve as a mobile desktop computer.
but here's what experience has taught me:
celerons are best suited for buisness apps.. ms office, web pages, basically anything hallowed out in the windows desktop enviroment. when you go into graphics, rendering, video - you need something with more of a punch (that bus speed and caching comes into play) or else you have to take the load off of it with a powerful graphics processor (shared memory baaaaad) and a lot of ram. even sound needs to have hardware support. at 2.5ghz i can see where someone's celeron will prop them up, but for that money i agree with what someone else said - go AMD. HP makes solid athlon machines for good coin.
that HP pavilion of mine is still in operation and runs great, i gave it to a friend with a TV wonder card so he can watch cable on it. it does his papers but once he tries doing his geographical surveys on it.. heheh it just chokes.
eMachines = baaaaaad.
/end topic
i was downstairs chatting with one of our IT guys the other day, and i noticed he had a new eMachine on his workbench. it had a big sticker on it that said "this computer is never obsolete! for 99$ a year you can blah blah blah".. i said thats interesting.. 'never obsolete'.. the IT guy said "that thing was obsolete before it went on the shelf"