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A CPU family from Intel designed to supersede Intel's x86-based servers. Although an advanced hardware architecture, and even with HP as its major supporter, Itanium gained only a fraction of the server market dominated by the x86 line. In addition, the compilers necessary to take full advantage of Itanium's elaborate architecture were never fully developed. By the time Itanium gained ground in the early 2000s, there were too many x86 servers running worldwide, and x86 performance was improving.

HP-UX (HP's Unix) and several other Unix versions run on Itanium; however, in the 2010 time frame, the Itanium versions of Windows Server, Red Hat Linux and Ubuntu Linux were given end of life.

x86 Kept Advancing
After 64-bit Itanium chips were introduced in 2001, Intel upgraded its x86 CPUs to 64 bits, and over the years added advanced security and fault detection features into high-end x86 Xeon chips. See Intel 64 and Xeon.

Native, x86 and HP PA-RISC Apps
Itaniums run native applications and emulate x86 and HP PA-RISC apps. x86 programs are executed in hardware or in software (see IA-32 Execution Layer). HP PA-RISC apps are translated in software (see Aries). For more on the Itanium architecture, see IA-64.

 Model           Process  Max.  Year   Tech.  Clock  Max.Code Name  Intro  (nm)   Speed  CoresItanium
 Merced     2001   180  800 MHz   1

 Itanium 2
 McKinley   2002   180  1.0 GHz   1
 Madison    2003   130  1.6 GHz   1
 Deerfield  2003   130  1.0 GHz   1
 Hondo      2004   130  1.1 GHz   1
 Fanwood    2004   130  1.6 GHz   1
 Madison    2004   130  1.7 GHz   1

 Montecito  2006    90  1.6 GHz   2
 Montvale   2007    90  1.7 GHz   2

 Itanium 9300
 Tukwila    2010    65  1.7 GHz   4

 Itanium 9500
 Poulson    2013    32  2.5 GHz   8
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References in periodicals archive ?
Intel on Thursday started shipping its latest Itanium 9700 chip, code-named Kittson, in volume.
continue to produce software for Intel's Itanium platform, in which HPE was a
In a statement, Oracle general counsel Dorian Daley said the company had been providing all its latest software for Itanium servers since Kleinberg's decision.
"The Oracle conduct at question in this case had a very significant and negative effect on the HP Itanium business," Orszag said during questioning by HP's legal team.
The Itanium 9500 series offers some impressive advantages over the older generation of Itanium processor, with a new microarchitecture doubling the cores and throughput, while the core frequency is now up to 2.53GHz, with an 8% lowered TDP, and 80% less idle power draw.
HP says it will continue to develop its HP-UX, OpenVMS and Nonstop platforms for Itanium, but it's also developing hardened, more resilient versions of Windows and Linux for the Xeon-based servers, it said.
"Now in its fourth year, the Itanium Innovation Awards program continues to evolve.
According to HP, PNB will be among the first customers of Integrity servers using the new Intel Itanium 2 9000 series processor, which will run FLEXCUBE, the core banking suite from i-flex solutions.
The PRIMEQUEST 500 series of servers using Dual-Core Intel Itanium 2 processors have been introduced by IT provider Fujitsu Siemens Computers, as part of the PRIMEQUEST server range.
PRIMEQUEST 420: Key specifications Model name PRIMEQUEST 420 Form factor 12U rack-mount (19") CPU Intel(R) Itanium(R) 2 Processor; 1.50 GHz/1.60 GHz CPU count 1 - 8 Chipset Fujitsu proprietary System board count 1 - 2 Interconnect Point-to-point crossbar; max data transmission 25.6 gigabits per second Memory Max 256GB Internal storage Max 584GB (w/ 2.5" SAS) PCI slots Max 18 Partitions Max 2 External dimensions 482 (W) x 820 (D) x 530 (H) Weight Max 150 kg Supported operating systems Red Hat(R)Enterprise Linux AS (v.4 for Itanium) Novell(R) SUSE(R) Linux Enterprise Server 9 for Itanium Processor Family Microsoft Windows Server 2003, Enterpr.
Effective immediately, BEA pricing for dual core CPUs and dual core-based systems, including the new Intel Pentium processor Extreme Edition, and the forthcoming dual-core Intel Xeon processors and Intel Itanium 2processors, will be the same as single core CPU licensing.