A type of multi-core technology that includes two separate
dual-core dies, where dial-core means a
CPU that includes two complete execution cores per
physical processor), installed together in one CPU package. In this set-up cores
1 and 2 would share a memory cache, as would cores 3 and 4. If core 1 or 2 needs
to communicate with 3 or 4, it is an external communication, usually via the
frontside bus. Both Intel and AMD have
introduced quad-core processors, starting with Intel in late 2006.
See dual-core.
Also see "All
About Dual-Core Processors" in the "Did
You Know..." section of Webopedia.