Enlarged color photograph of the Intel® Pentium® 4 processor packages. Level Two cache: 256 KB Advanced Transfer Cache (Integrated). Processor Package Style: PGA423. System Bus Speed: 400 MHz. Users of Pentium® 4 processor-based PCs can create professional-quality movies; deliver TV-like video via the Internet; communicate with real-time video and voice; render 3D graphics in real time; quickly encode music for MP3 players; and simultaneously run several multimedia applications while connected to the Internet. The processor debuted with 42 million transistors and circuit lines of 0.18 microns. Intel's first microprocessor, the 4004, ran at 108 kilohertz (108,000 hertz), compared to the Pentium® 4 processor's initial speed of 1.5 gigahertz (...