Intel Extended Memory 64 Technology (EM64T) enables
64-bit computing on the
server,
workstation and
desktop platforms when combined with supporting
software.
Intel EM64T improves performance by allowing the system to address more than 4
GB of both virtual and physical memory. Intel EM64T provides support for:
- 64-bit flat virtual address space
- 64-bit pointers
- 64-bit wide general purpose registers
- 64-bit integer support
- Up to 1 terabyte (TB) of platform address space
Also see
All About Dual-Core Processors in Webopedia's "Did
You Know...?" section.