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.

See Core 2. In early 2006, and based on the existing Pentium M (mobile) architecture, the dual core, 32-bit Core Duo was the first chip introduced with the Core brand. Used only in laptops ...