List of Intel CPU microarchitectures

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The following is a partial list of Intel CPU microarchitectures. The list is not complete.

[edit] x86 microarchitectures

• i386 -- First 32-bit x86 processor
• i486 -- Intel's second-generation of 32-bit x86 processors
• P5 -- Original Pentium microprocessors
• P6 -- Used in Pentium Pro, Pentium II, Pentium II Xeon, Pentium III, and Pentium III Xeon microprocessors
• NetBurst -- Used in Pentium 4, Pentium D, and some Xeon microprocessors. Commonly referred to as the P7 microarchitecture although its internal name was P68 (P7 was used for Itanium).
• Pentium M -- Updated version of Pentium III's P6 microarchitecture designed from the ground up for mobile computing

• Enhanced Pentium M -- Updated, dual core version of the Pentium M microarchitecture used in Core microprocessors.

• Core -- New microarchitecture used in Core 2 and Xeon microprocessors, built on a 65nm process.

• Penryn -- 45nm shrink of the Core microarchitecture with larger cache, faster FSB and clock speeds, and SSE4.1 instructions.

• Atom -- Low-power, in-order x86-64 processor for use in Mobile Internet Devices.
• Nehalem -- Expected to be released in 2008, built on a 45nm process. It will be an enhanced version of the Core microarchitecture.

• Westmere -- 32nm shrink of the Nehalem microarchitecture with several new features, expected around 2009.

• Sandy Bridge -- Future Intel microarchitecture, expected around 2010, based on a 32nm process. Formerly called Gesher but renamed in 2007.

• 22nm Sandy Bridge shrink -- 22nm shrink of the Sandy Bridge microarchitecture, expected around 2011.

[edit] Itanium microarchitectures

• Merced microarchitecture -- Original, flawed Itanium microarchitecture. Used only in the first Itanium microprocessors.
• McKinley microarchitecture -- Enhanced microarchitecture used in the first two generations of the Itanium 2 microprocessor.

• Montecito microarchitecture -- Enhanced McKinley microarchitecture used in the Itanium 2 9000- and 9100-series of processors. Added dual core, coarse multithreading, and other improvements.

• Tukwila microarchitecture -- Future Itanium microarchitecture adding integrated memory controllers, quad core support, and other improvements.
• Poulson -- Future Itanium processor said to feature a new microarchitecture^[1].

[edit] References