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Definition: Prescott

The code name for the first Pentium 4 chip to use the 90 nanometer (0.09 micron) process technology. Introduced in early 2004 with clock speeds from 2.8 to 3.4 GHz, model designations for the Prescott use an "E;" for example, Pentium 4 3.4E GHz. See Pentium 4.