Pentium 4

The Pentium 4 brand refers to Intel's line of single-core mainstream desktop and laptop central processing units (CPUs) introduced on November 20, 2000. They had the 7th-generation microarchitecture, called NetBurst, which was the company's first all-new design since 1995

It features a very deep instruction pipeline to achieve very high clock speeds (up to 4 GHz) limited only by maximum power consumption (TDP) reaching up to 115 W in 3.6–3.8 GHz

In 2004, the initial 32-bit x86 instruction set of the Pentium 4 microprocessors was
extended by the 64-bit x86-64 set

The original Pentium 4, codenamed "Willamette", ran at 1.4 and 1.5 GHz and was released in November 2000 on the Socket 423 platform. Notable with the introduction of the Pentium 4 was the 400 MT/s FSB. It was actually based on a 100 MHz clock wave, but the bus was quad-pumped, meaning that the maximum transfer rate was four times that of a normal bus, so it was considered to run at 400 MT/s.

Pentium 4 CPUs introduced the SSE2 and SSE3 instruction sets to accelerate calculations, transactions, media processing, 3D graphics, and games. They also integrated Hyper-threading (HT), a feature to make one physical CPU work as two logical and virtual CPUs.

The Pentium 4 has an IHS (Integrated Heat Spreader) that prevents the die from accidentally getting damaged when mounting and unmounting cooling solutions.