The first
Pentium microprocessor was introduced by
Intel on March 22, 1993. Its
microarchitecture, dubbed
P5, was Intel's fifth generation and the first
superscalar IA-32 one. As a direct extension of the
80486 architecture, it included dual
integer pipelines, a faster
floating-point unit, wider
data bus, separate code and
data caches and features for further reduced address calculation latency. In 1996, the
Pentium with MMX Technology (often simply referred to as
Pentium MMX) was introduced with the same basic microarchitecture complemented with an
MMX instruction set, larger caches, and some other enhancements.