Hyper-pipelined (20-stage or 31-stage) technology.Arithmetic logic units (ALUs) run at twice the processor core frequency.Processor (front-side) bus runs at 400MHz, 533MHz, 800MHz, or 1066MHz.Some Prescott versions support EM64T (64-bit extensions) and Execute Disable Bit (buffer overflow protection).Software compatible with previous Intel 32-bit processors.125 million transistors, 0.09-micron process, 112 sq.55 million transistors, 0.13-micron process, 131 sq.42 million transistors, 0.18-micron process, 217 sq.The main technical details for the Pentium 4 include Figure 3.61 The CPU dies for the Pentium 4 CPU based on the Willamette, Northwood, and Prescott cores.
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