Itanium 2 processor, 2003
|Produced:||From mid 2001 to present|
|Max CPU clock:||733 MHz to 1.66 GHz|
|FSB speeds:||300 MHz to 667 MHz|
|Cores:||1 or 2|
|Core names: |
Itanium is the brand name for 64-bit Intel microprocessors that implement the Intel Itanium architecture (formerly called IA-64). Intel has released two processor families using the brand: the original Itanium and the Itanium 2. Starting November 1, 2007, new members of the second family are again called Itanium. The processors are marketed for use in enterprise servers and high-performance computing systems. The architecture originated at Hewlett-Packard (HP) and was later developed by HP and Intel together.
Itanium's architecture differs dramatically from the x86 architectures (and the x86-64 extensions) used in other Intel processors. The architecture is based on explicit instruction-level parallelism, with the compiler making the decisions about which instructions to execute in parallel. This approach allows the processor to execute up to six instructions per clock cycle. By contrast with other superscalar architectures, Itanium does not have elaborate hardware to keep track of instruction dependencies during parallel execution - the compiler must keep track of these at build time instead.
After a protracted development process, the first Itanium was released in 2001, and more powerful Itanium processors have been released periodically. HP produces most Itanium-based systems, but several other manufacturers have also developed systems based on Itanium. As of 2007, Itanium is the fourth-most deployed microprocessor architecture for enterprise-class systems, behind x86-64, IBM POWER, and SPARC. Intel released its newest Itanium, codenamed Montvale, in November 2007.
- 1 History
- HP begins investigating EPIC
- June: HP and Intel announce partnership
- December: Intel and Sun announce joint effort to port Solaris to IA-64
- August: IDC predicts IA-64 systems sales will reach $25bn/yr by 2002
- October: Intel Announces the Itanium name
- October: the term Itanic is first used
- February: Project Trillian delivers source code
- June: IDC predicts Itanium systems sales will reach $25bn/yr by 2003
- July: Sun and Intel drop Solaris-on-Itanium plans
- August: AMD releases specification for x86-64,
a set of 64-bit extensions to Intel's own x86 architecture intended to
compete with IA-64. It will eventually market this under the name
- June: IDC predicts Itanium systems sales will reach $15bn/yr by 2004
- June: Project Monterey dies
- July: Itanium is released
- October: IDC predicts Itanium systems sales will reach $12bn/yr by the end of 2004
- November: Compaq delays Itanium Product release due to problems with processor
- December: Gelato is formed
- March: IDC predicts Itanium systems sales will reach $5bn/yr by end 2004
- June:Itanium 2 is released
- February: Intel announces it has been working on its own x86-64
implementation (which it will eventually market under the name "Intel
- June: Intel releases its first processor with x86-64 extensions, a Xeon
processor codenamed "Nocona"
- December: Itanium system sales for 2004 reach $1.4bn
- January: Itanium Solutions Alliance announces a $10bn collective investment in Itanium by 2010
- October: Intel releases the "Montvale" Itanium 2
- November: Intel renames the family back to Itanium.