Bit Tech has just published a feature titled 64-bit: More than just the RAM, which covers the pros and cons of an x86-64 computing environment.
"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.
Until that time, those who use 64-bit systems can enjoy the perks - slightly sped-up processes on double-executed 32 bit code, a full 4GB of RAM, protected execution, more stable and accurate code due to the increased data size and enhanced overall system efficiency due to relative pointers just to name a few. And for the software that has already come to pass with the likes of Adobe Photoshop, Maya, Vue Infinite, some CAD programs and quite a few games, you'll have plenty of toys that get a little boost right now.