It was used exclusively in mission-critical servers from HPE. In February 2017, Intel released the final generation, Kittson, to test customers, and in May began shipping in volume. In 2008, Itanium was the fourth-most deployed microprocessor architecture for enterprise-class systems, behind x86-64, Power ISA, and SPARC. Itanium-based systems were produced by HP and its successor Hewlett Packard Enterprise (HPE) as the Integrity Servers line, and by several other manufacturers. Emulation to run existing x86 applications and operating systems was particularly poor. When first released in 2001, Itanium's performance was disappointing compared to better-established RISC and CISC processors. In the concept phase, engineers said "we could run circles around PowerPC, that we could kill the x86." Early predictions were that IA-64 would expand to the lower-end servers, supplanting Xeon, and eventually penetrate into the personal computers, eventually to supplant RISC and complex instruction set computing (CISC) architectures for all general-purpose applications. Launched in June 2001, Intel initially marketed 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 ( / aɪ ˈ t eɪ n i ə m/ eye- TAY-nee-əm) is a discontinued family of 64-bit Intel microprocessors that implement the Intel Itanium architecture (formerly called IA-64).
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