Pentium 4
From TPU Reference
The Intel Pentium 4 is a processor based on Intel's NetBurst architecture. It allows for very high clock speeds, yet was slower than contemporary processors manufactured by AMD. The fastest Pentium 4 processor ever released was clocked at 3.8 GHz. The problem that Intel ran into very early in the Pentium 4's life was heat, this problem eventually lead to the end of the Pentium 4 and Pentium D.
The Pentium 4 was available with 256KB, 512KB, 1MB, and 2 MB of L2 Cache. It was based on the Willamette(180nm), Northwood(130nm), Prescott(90nm), and Cedar Mill(65nm) cores.
The FSB ranged from 400 MHz up to 800 MHz, quad pumped. So the actual bus speeds ranged from 100 MHz to 200 MHz.
They were available for Socket 423, 478, and Socket 775.
The Northwood based Pentium 4s were the first home processors the world saw that was capable of handling more than one thread per core. Intel named this technology Hyper-Threading, and in certain applications it provided a large performance boost.
