Intel in partnership with HP had refused to extend the ancient x86 platform and had already committed to its all new pure 64 bit IA-64 Itanium architecture. X64 is the 64 bit extension technology that AMD invented (AMD64) to seamlessly migrate the 32 bit x86 (as in 286, 386, 486 compatible microprocessors) world into a 64 bit era. Do we go with x86 32 bit edition or 圆4 64 bit edition? I'm going to try to clear that question up as best as I can and explain the pros and cons of each choice.įirst we must understand a little background on what 圆4 is. One of the more common questions I hear about Vista is which bit version of Windows Vista should one get.