pentium 2

Pentium II
Pentium 2

   <processor> {Intel Corporation}'s successor to the {Pentium
   Pro}.

   The Pentium II can execute all the instructions of all the
   earlier members of the {Intel 80x86} processor family.  There
   are four versions targetted at different user markets.  The
   {Celeron} is the simplest and cheapest.  The standard Pentium
   II is aimed at mainstream home and business users.  The
   {Pentium II Xeon} is intended for higher performance business
   {servers}.  There is also a mobile version of the Pentium II
   for use in portable computers.

   All versions of the Pentium II are packaged on a special
   {daughterboard} that plugs into a card-edge processor slot on
   the {motherboard}.  The daughterboard is enclosed within a
   rectangular black box called a {Single Edge Contact} (SEC)
   cartridge.  The budget {Celeron} may be sold as a card only
   without the box.  Consumer line Pentium II's require a 242-pin
   slot called {Slot 1}.  The {Xeon} uses a 330-pin slot called
   Slot 2.  Intel refers to Slot 1 and Slot 2 as SEC-242 and
   SEC-330 in some of their technical documentation.  The
   daughterboard has mounting points for the Pentium II {CPU}
   itself plus various support chips and {cache} memory chips.
   All components on the daughterboard are normally permanently
   soldered in place.  Previous generation {Socket 7}
   motherboards cannot normally be upgraded to accept the Pentium
   II, so it is necessary to install a new motherboard.

   All Pentium II processors have {Multimedia Extensions} (MMX)
   and integrated Level One and Level Two cache controllers.
   Additional features include {Dynamic Execution} and Dual
   Independent Bus Architecture, with separate 64 bit system and
   cache busses.  Pentium II is a {superscalar} CPU having about
   7.5 million {transistors}.

   The first Pentium II's produced were code named {Klamath}.
   They were manufactured using a 0.35 micron process and
   supported {clock rates} of 233, 266, 300 and 333 {MHz} at a
   {bus} speed of 66 MHz.  Second generation Pentium II's, code
   named Deschutes, are made with a 0.25 micron process and
   support rates of 350, 400 and 450 MHz at a bus speed of 100
   MHz.

   (http://intel.com/PentiumII/).

   (1998-10-06)