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The only downside is that 64-bit programs don't work on 32-bit OSs, and 64-bit OSs don't work on very old (32-bit) processors. Now, most people buy 32-bit OSs because they don't understand the difference, and 32-bit is default because 32-bit OSs work on ALL processors. So, with the majority of the market currently on 32-bit systems, companies program 32-bit programs with only basic support for the rest of us for now.
Now for the reason I went 64-bit: I just built the computer, and intend for it to last 4-5 years, realistically. Many games are starting to push the limits of RAM; Supreme Commander uses over the 2GB limit when available with a small tweak to allow it to. I believe that within 2-4 years, 4GB of RAM will be the new standard high end level for games and RAM intensive programs. I just timed it poorly for other more average programs, I guess... |