the Pentium 4 was introduced at the end of 2000 with 1.4 and 1.5 GHz clock rates. Speed later reached 3.8 GHz. Pentium 4 chips were first built with 180nm process technology and subsequently ...
By comparison, the 90nm Prescott-based Pentium 4 521 was set at the same frequency and had an 84w TDP while the upcoming 65nm Core 2 Duo had a maximum TDP of 65w when clocked at 3GHz.