Pentium II

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Related to Pentium II: Pentium Pro

Pentium II

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.

Pentium II

The successor to the Pentium Pro from Intel. Pentium II refers to the CPU chip or the PC that uses it. Code-named Klamath, the Pentium II was a Pentium Pro with MMX multimedia instructions. Introduced in 1997 at clock rates of 233 MHz and 266 MHz, it used a 66 or 100MHz system bus and introduced the Single Edge Contact Cartridge (SECC). The Pentium II chip used variable power voltages. See Pentium and SECC.

The Chip Itself
Looking like an aerial view of a large city, this is a Pentium II CPU chip with 7.5 million transistors. (Image courtesy of Intel Corporation.)
References in periodicals archive ?
Like other members of the Pentium II Xeon processor family, the new Pentium II Xeon processor at 450 MHz delivers industry-leading performance from its larger and faster Level 2 (L2) caches, multiprocessing capabilities and 100-MHz system bus.
The combination of the pure performance of the Pentium II Xeon processor and the systems' scaleability brings exceptional levels of price performance to the two-way server and workstation market segments.
Customers need only open their system case, and follow Evergreen's illustrated, step-by-step installation guide to remove the old Pentium II, Celeron or Pentium Pro CPU and replace it with Evergreen's Performa upgrade.
Today's workforce is becoming increasingly mobile, and mobile Pentium II processors give users the processing power they need to be successful in the evolving Internet-based business world," said Frank Spindler, vice president and director of marketing of Intel's Mobile and Handheld Products Group.
Intel Corporation has selected the Centellis 8730 as a Reference Platform in their booth at the PC Developer's Conference for the Pentium II Mobile Module, which is targeted specifically to the mobile and embedded computing markets.
Force Computers, a Solectron subsidiary (NYSE:SLR) and a leader in embedded computing, today announced that its popular CPCI-730(tm) single board CompactPCI computer is now based on Intel's 333MHz Pentium II processor-Low Power (-LP) module.
The Primergy 870-40 systems achieved record benchmarks running on Intel's new Pentium II Xeon/450 processors in recent TPM-C(TM) and SAP benchmarks.
The Plug-N-Run is a 3 x 5 inch low-power module containing all the functionality of a traditional PC motherboard -- including an Intel mobile Pentium or mobile Pentium II CPU, cache, chipset, graphics controller, BIOS, and Super I/O, in a form factor designed for mobile and embedded computer systems.
Intel today also introduced new low-voltage versions of the mobile Pentium II and Celeron processors at 266MHz.
Sequent Pentium II Xeon-based NUMA-Q and NUMACenter servers made news with record benchmark results in 1998 and early 1999.
New Performa III 1GHz (powered by Intel's Coppermine PIII), Performa 1GHz and Spectra III 1GHz (powered by Intel's Celeron II) CPU upgrades bundle with 128Mb SDRAM to give comprehensive performance boost for users with early Pentium III, Pentium II, and Celeron machines