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.
2006-01-05 Intel Presler 65 nm chip dual core chip including Vanderpool (a virtualization technology) to succeed Smithfield. Likely to run at 3.6 GHz and above. Previously known as Blue Pressler. Is in fact two Cedar Mill chips bonded together. Uses the i975X chipset.
2006-Q1 Intel Cedar Mill 65 nm processor Prescott-shrink, fill the gap between Prescott and Conroe. Said to be prepared for dual cores but will start off as a HyperThreading (dual threads) supporting single core chip. Newer info says that it is half a Presler. A value version with 512 KB of L2 cache, no HyperThreading and a slower bus is also rumoured.
2006-Q2 Intel Dempsey Dual core server processor to succeed Irwindale. An MV Dempsey with a power demand of less than 105 W will also be out. Part of the Bensley platform. Some samples will be out this year. Uses the Greencreek and Blackford chipsets