Itanium

Itanium family

Itanium 2 processor
Produced	From mid-2001 to present
Common manufacturer(s)	Intel
Max. CPU clock rate	733 MHz to 2.53 GHz
FSB speeds	300 MHz to 667 MHz
Instruction set	Itanium
Cores	1, 2, 4 or 8

Itanium (Merced)

Itanium processor
Produced	From June 2001 to June 2002
Common manufacturer(s)	Intel
Max. CPU clock rate	733 MHz to 800 MHz
FSB speeds	266 MT/s
Instruction set	Itanium
Cores	1
L2 cache	96 KB
L3 cache	2 or 4 MB
Socket(s)	PAC418
Core name(s)	Merced

Itanium 2 (McKinley)

Itanium 2 processor
Produced	From 2002 to 2010
Designed by	Intel
Common manufacturer(s)	Intel
Max. CPU clock rate	900 MHz to 2.53 GHz
Instruction set	Itanium
Cores	1, 2, 4 or 8
L2 cache	256 KB on Itanium2 256 KB (D) + 1 MB(I) or 512 KB (I) on (Itanium2 9x00 series)
L3 cache	1.5-32 MB
Socket(s)	PAC611 FC-LGA6 (LGA1248) (Itanium 9300 series)
Core name(s)	McKinley Madison Hondo Deerfield Montecito Montvale Tukwila Poulson

Itanium (/aɪˈteɪniəm/ eye-TAY-nee-əm) is a family of 64-bit Intel microprocessors that implement the Intel Itanium architecture (formerly called IA-64). Intel markets the processors for enterprise servers and high-performance computing systems. The Itanium architecture originated at Hewlett-Packard (HP), and was later jointly developed by HP and Intel.

Itanium-based systems have been produced by HP (the HP Integrity Servers line) and several other manufacturers. As of 2008^[update], Itanium was the fourth-most deployed microprocessor architecture for enterprise-class systems, behind x86-64, Power Architecture, and SPARC. The Poulson processor was released on November 8, 2012. While Intel said in April 2015 that it continued to work on Poulson's successor Kittson, Hewlett-Packard was the only remaining volume customer and even HP has since introduced Xeon-based machines. It appears that Kittson, announced for mid-2017, will be the last Itanium released, with a modest performance increase over Poulson. As of February 2016^[update], Poulson was the most recent processor available.