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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
References in periodicals archive ?
Across the street from Wat Botum earlier this week, musicians Julien Poulson, Jean-Luc Jousse and Hollie Lewis were lounging by the pool at the guesthouse Villa Grange, the headquarters for the Phnom Penh portion of the inaugural Folk Art Blues Fest Cambodia.
But that interest did not translate into many new permanent residents, says Rebecca Poulson, vice president of the Alaska Historical Society and a Sitka historian who is researching the decade between 1867 and 1877.
Eddie Poulson asked the 70-year-old driver of the Passat if he was alright but when the man said he was calling the police Poulson went to his parents' home.
Poulson recently presented a session on collective bargaining for public safety employees such as police officers and fire fighters at a seminar organized by LRIS, Labor Relations Information System.
Mark's mum Beverley Poulson will run the cafe, while Mark continues his full-time job as a manager in a car dealership.
Joseph Poulson, 27, worked for a gang allegedly led by Merseyside champion cage fighter Paul 'Boom Boom' Cahoon.
1974: Architect John Poulson, above, is jailed for five years for bribing public figures to win contracts.
Keith Poulson, local secretary of the National Union of Miners (NUM), is particularly bitter.
According to the SEC, Equity Trust took an active role in marketing investments offered by Ephren Taylor, who targeted churchgoers while running a Ponzi scheme, and Randy Poulson, who has been indicted in federal district court for an alleged offering fraud targeting real estate investors in New Jersey.
Fay and his wife, Marion, of Westborough; two sisters, Frances Poulson of Stow and Janet Fay of Missoula, Montana; one niece, Fay Kulik and her husband, Stephen; four nephews, Benjamin Poulson and his wife, Joan, Seth Poulson and his wife, Betsy, John Poulson and his wife, Johanna, and Paul Poulson.
Anonymity on the Tor network may be compromised: "FBI agents relied on Flash code from an abandoned Metasploit side project called the 'Decloaking Engine' to stage its first known effort to successfully identify a multitude of suspects hiding behind the Tor anonymity network," reports Kevin Poulson for Wired.
Only two Suffolk batsmen got out of the teens, former Yorkshire batsman Simon Guy with 75 and number nine batsman James Poulson with 66.