It's Intel's first attempt at a fully 64-bit processor. Though things may change in the future as of right now a traditional 32-bit processor is better suited to home and business use. Likewise, you'll note that the 32-bit emulation present within the Itanium is fundamentally flawed and, likewise, runs most current software significantly slower than a comparable P3 or Athlon.
If you're considering a new processor you may wish to investigate the recently released AMD's AthlonXP which, though 32-bit in nature, is very competitive on both the price and performance fronts.
If you're considering a new processor you may wish to investigate the recently released AMD's AthlonXP which, though 32-bit in nature, is very competitive on both the price and performance fronts.