Intel Extended Memory 64 Technology


Mostly compatible with AMD's AMD64 architecture

Introduced Spring 2004, with the Pentium 4F (D0 and later P4 steppings)

 Pentium 4F

Prescott-2M built on 0.09 µm (90 nm) process technology

2.8-3.8 GHz (model numbers 6x0)

Introduced February 20, 2005

Same features as Prescott with the addition of:-

2 MB cache

Intel 64bit

Enhanced Intel SpeedStep Technology (EIST)

Cedar Mill built on 0.065 µm (65 nm) process technology

3.0-3.6 (model numbers 6x1)

Introduced January 16, 2006

die shrink of Prescott-2M

Same features as Prescott-2M

 Pentium D

Main article: List of Intel Pentium D microprocessors

Dual-core microprocessor

No Hyper-Threading

800(4x200) MHz front side bus

Smithfield - 90 nm process technology (2.66–3.2 GHz)

Introduced May 26, 2005

2.66–3.2 GHz (model numbers 805-840)

Number of Transistors 230 million

1 MB x 2 (non-shared, 2 MB total) L2 cache

Cache coherency between cores requires communication over the FSB

Performance increase of 60% over similarly clocked Prescott

2.66 GHz (533 MHz FSB) Pentium D 805 introduced December 2005

Contains 2x Prescott dies in one package

Presler - 65 nm process technology (2.8–3.6 GHz)

Introduced January 16, 2006

2.8–3.6 GHz (model numbers 915-960)

Number of Transistors 376 million

2 MB x 2 (non-shared, 4 MB total) L2 cache

Contains 2x Cedar Mill dies in one package