Pentium 2


Pentium II [Intel] Pentium II on May 7, 1997 launch of the microprocessor. It is based on P6 architecture used by Pentium Pro, but to strengthen the 16-bit performance, and the addition of MMX instruction set.


Pentium II Intel launched an X86 architecture processors, based on P6 microarchitecture used by Pentium Pro, but on the other hand it's 16 yuan processing ability to obtain optimal, and added MMX instructions:

the first generation core code for Klamath Pentium II, 350-nm process, and, in terms of time to produce a very high heat. When launched, the clock only 233 and 266MHz, using 66MHz FSB, 300MHz clock version of

when the latter launched another second-generation Pentium II core, code-named Deschutes, run the clock is 333MHz, 1 in 1998 launched use 250-nanometer manufacturing process, but also effectively reduce the temperature. Support 100MHz front-side bus, Intel launched in 1998. In addition clock is 266,330,350,400,450 the Pentium II processor.

Pentium II computer-based system also added new generation memory standard --SDRAM [] Alternatively EDO RAM, and the AGP video card.

with a Pentium processor and various Pentium Pro, Pentium II using one slot design. The processor chip and other chips on a circuit board are similar to the daughter card, and the circuit board has a plastic cover, and sometimes also a fan. Pentium II also put into this circuit board L2, but half the clock speed only when the processor is running. This increase in yield processors, thereby reducing production costs.

This method is also easier to change the Pentium II processor L2, Intel can use the same chip, but can be made inexpensive processor inefficient, expensive prices can also be prepared performance of the processor.

Pentium II processor entry-level, to reduce or even cancel the L2 [L2] of Celeron. Because of its low efficiency, it is generally professionals do not use Celeron processor, but because it can be super sensitive than pulse of [L2 processor chip], it also has a certain market.

Pentium II processor of higher order, as a Pentium II Xeon. It is designed for the server, but also a full-speed L2. It has versions respectively 512KB, 1MB, 2MB of.

Pentium II processor while mobile version, has 256KB L2, but the built-in chip, the fastest Pentium II.

Pentium II substituted Pentium III in 1999.


Klamath (350 nm)

L1: 16 + 16 KB [information + instructions]

L2: 512 KB, external to the processor chip, while only 50% of the processor's clock

Slot 1


FSB: 66 MHz

VCore : 2.8 V

debut: 1997 May 7

clock: 233, 266, 300 MHz

Pentium 2

Tonga (250 nm), Pentium II Mobile

L1: 16 + 16 KB instruction information + []

L2: 512 KB, external to the processor chip, while only 50% of the processor's clock

< p> MMC-1, MMC-2, Mini-Cartridge


FSB: 66 MHz

VCore: 1.6 V

first introduced: in 1997

clock: 233, 266, 300 MHz

Deschutes (250 nm)

L1: 16 + 16 KB [information + instructions ]

L2: 512 KB, external to the processor chip, while only 50% of the processor's clock

Slot 1


FSB: 66, 100 MHz

VCore: 2.0 V

first launched: 1998 January 26

clock: 266 - 450 MHz

66 MHz FSB: 266, 300, 333 MHz

100 MHz FSB: 350, 400, 450 MHz

Dixon (250 nm), mobile Pentium II PE ( "Performance Enhanced")

L1 cache: 16 + 16 KiB (Data + Instructions)

L2 cache: 256 KiB, on-die, full CPU speed

BGA1, μPGA1 (GTL +)


Front side bus: 66 MHz

VCore: 1.5, 1.55, 1.6 V

First release : January 25 1999

Clockrate: 266 - 400 MHz

Related Articles