2005-02-21 Prescott 600 series / XE Pentium 4 XE is a Prescott update with 2 MB of L2 cache and a 1066 MHz bus released at 3.73 GHz. Needs the i925XE chipset or later to use the 1066 MHz bus. Previously called Pentium 4 720.
The first processors with the Execute Disable bit will have a 'J'-suffix.
The 6xx series and EE includes added Enhanced Speed Step (EIST or ESS) and EM64T support.
2005-04-18 Intel Pentium D Dual core processor replacing Tejas. Smithfield is the Workstation / gaming implementation of Paxville, part of the Lyndon platform. Uses the LGA775 socket and the Glenwood and Lakeport chipsets. Based on the NetBurst / Pentium 4 architecture but without HyperThreading. Basically two Pentium 4 chips on one die.
Launched in Q2 at 2.8, 3.0 and 3.2 GHz named 820 ($241), 830 ($316) and 840 ($530) respectively.
Launched as 'Pentium D' and 'Pentium EE', where EE adds HyperThreading.
2005-05-26 Intel 945 Chipset succeeding Grantsdale supporting Dual Core processors to be named 945. Will be available both with and without GPU (945G and 945P versions). The GPU included is a faster clocked GMA900 called GMA950.
Earlier rumoured to include Pixel and Vertex shaders 2.0 or possible 3.0. Released in 945G, 945P etc. versions. Previously known as Lakeport.
A mainstream version called 945GZ with grpahics, but only one memorychannel, no 1066 MHz support and no PCIe will be added in 2006-Q1.