The need for 64-bit computing is driven by applications that address large amounts of data and memory, such as high-performance servers, database management systems, CAD tools, and digital content creation tools. Although this increased demand on the high-end along with technical advances is making 64-bit a reality, it is anticipated that the industry as a whole will not fully embrace the 64-bit world entirely for many more years.

Existing 32-bit environments and applications will continue to serve a majority of users for quite sometime, although they too will require continual improvements in processor and system performance to continue. Many x86 workstation and server users are now facing the dilemma of how to transition to 64-bit computing, yet maintain their existing knowledge base and investment in the existing code base and tools. The challenge for processor manufacturers is to find a way to offer customers all the advantages of 64-bit processing in a market friendly fashion while making the conversion from 32-bit efficient and inexpensive. Unfortunately, the 64-bit solutions proposed by some processor manufacturers leave customers facing a potentially disruptive and ultimately expensive transition to the new architectures.