Currently the 32/64 issue is irrelevant for most users; You only need 64-bit if you use more than 3GB of memory. Up to 3GB can be used with 32-bit.
Performance-wise, most apps are compiled as 32-bit to be able to run on both, and may be 0.1% slower on 64-bit.
Most people are in a two categories:
1- Word Processing and Web Browsing (A netbook with 1GB RAM/160GB HD is enough).
2- Gamers and Graphic Designers (Highest possible specs according to their budget, especially the graphics card)
Currently the 32/64 issue is irrelevant for most users; You only need 64-bit if you use more than 3GB of memory. Up to 3GB can be used with 32-bit.
Performance-wise, most apps are compiled as 32-bit to be able to run on both, and may be 0.1% slower on 64-bit.
Most people are in a two categories:
1- Word Processing and Web Browsing (A netbook with 1GB RAM/160GB HD is enough).
2- Gamers and Graphic Designers (Highest possible specs according to their budget, especially the graphics card)