Pentium 4 cpu - Hyperthreading (Northwood) 2.4 Ghz socket 478 800 mhz FSB

Northwood

A 'Northwood' core Pentium 4 processor (P4A)

In October 2001, the Athlon XP regained a clear lead for AMD, but in January 2002, Intel released Pentium 4s with their new Northwood core at 1.6, 1.8, 2.0 and 2.2 GHz.^[7][8] Northwood (product code 80532) combined an increase in the secondary cache size from 256 KiB to 512 KiB (increasing the transistor count to 55 million, up from 42 million) with a transition to a new 130 nm (0.13 micrometer) fabrication process.^[8] By making the chip out of smaller transistors, chips can run at higher clocks or at the same speed while producing less heat.