Quote from Kingvest:
there's only a Windows XP 64-Bit Edition for 64-Bit Extended Systems right now which is beta stage.
I doubt that they will release a 64-Bit home edition.
Running the 64-Bit Version right now is pretty much pain in the ass as the 64-Bit drivers from other hardware manufacturers are still lacking. Like ATI still didn't officially release their 64-Bit Beta drivers.
from what i've heard, WINXIP 64bit beta is very buggy. my roommate runs 32bit XP on his AMD 64 3000+
i think you should get an Intel w/hyperthreading instead of AMD 64, because real 64 bit operations is not going to be a reality till Longhorn comes out. plus, non of the trading software are 64bits.
AMD 64 is useless for trading, if i would spend the money to get one, it is going to run w/gentoo linux 2.6kernel compiled with 64bit processor. on the other side, i dont know of any vendor is selling trading software for linux