64-bit - More than just the RAM
 

Whether you came into this article with some of your own thoughts on the matter or with little knowledge on the subject at all, I hope that you've learned some new things about 64-bit computing. Though it is still relatively "young" (despite its age) in the commercial sector, it's been the chosen evolution for the industry for some time. Modern processors, chipsets and now finally operating systems have started to make the move, and as the technology filters down into the "average home," the software will follow.

http://www.bit-tech.net/bits/2007/10...just_the_ram/1