The Intel Pentium 4 processor

In November 2000 Intel introduced the new and very powerful high-end chip Pentium 4, formerly known as codename "Willamette". It was (as expected) delayed.

The Pentium 4 is a completely new processor holding several new designs. Here is a highlight:

400 MHz Front Side Bus of 128 bit width

Execution Trace Cache

20 KB L1 cache and 256 KB L2

The ALU (Arithmetical Logic Unit) runs at twice the clock speed

A new socket for simple motherboard design

Clock frequencies from 1500 MHz

20 stages pipeline

SSE2 and 128 bit MMX

42 millions of transistors

A new 423 pins socket design

Dual Rambus memory channel with i850 chipset

Only single processor mode available.

Posted in: processor