List of Intel Itanium processors
The Itanium from Intel is a high-end server and supercomputer microprocessor.
Itanium (2001)
Merced (180 nm)
Steppings: C0, C1 and C2. CPUID: 0007000604h, 0007000704h or 0007000804h. Transistor count: 25.4 million for CPU, 295 million for the external L3 cache. The FSB data bus is 64 bits wide, not 128 like in Itanium 2.Itanium 2 (2002-2007)
Itanium 2 uses socket PAC611 with a 128 bit wide FSB. The 90 nm CPUs bring dual-core chips and an updated microarchitecture adding multithreading and splitting the L2 cache into a 256 KB data cache and 1 MB instruction cache per core. All Itaniums except some 130 nm models are capable of >2-socket SMP.McKinley (180 nm)
Stepping: B3. Die size: 421 mm2. Transistor count: 221 million. CPUID: 001F000704hMadison (130 nm)
Stepping: B1. Die size: 374 mm2. Transistor count: 410 million. CPUID: 001F010504h.The Madison 9M table contains the 4MB and 6MB successors of the first Madisons.
Deerfield
The same chip as Madison, but at a lower voltage.Madison 9M (130 nm)
Steppings: A1 and A2. Die size: 432 mm2. Transistor count: 592 million. CPUID: 001F020104h or 001F020204h.9M is the chip of all the third generation Itanium 2s, irrespective of the amount of enabled cache.
Fanwood
The same chip as Madison 9M, but restricted to 2-socket and uniprocessor systems.HP mx2 MCM (130 nm)
This multi-chip module codenamed Hondo is not an Intel product, but a separate project of Hewlett-Packard to pack two CPUs onto one PAC611 socket. The S-Spec SL75Z was assigned to the chips that Intel sent to HP for use in mx2.Montecito (90 nm)
Steppings: C1 and C2. Die size: 596 mm2. Transistor count: 1720 million. CPUID: 0020000504h or 0020000704h.All processors can support the legacy 400 MT/s FSB. From Montecito onwards all Itaniums are MP-capable.
Montvale (90 nm)
The chip is similar to Montecito, but the stepping is A1 and the CPUID is 0020010104h. The models with 533 MT/s FSB also support 400 MT/s FSB operation. The processors with the Core level Lock-Step error correction feature were released only in 2008. Even though Intel does not use the "Itanium 2" branding for the 9100-series, it's still grouped with Itanium 2 processors because it uses the same platform and is a minor update on the 9000-series.Itanium (2007–2019)
These later generations of Itanium use socket LGA 1248, the QuickPath Interconnect and Scalable Memory Interconnect having replaced the Front-Side Bus used by Itanium 2.Tukwila (65 nm)
Stepping: E0. Die size: 699 mm2. Transistor count: 2046 million. CPUID: 0020020404.All models support: XD bit, Hyper-threading, Turbo Boost, VT-i2, Intel VT-d, RAS with Advanced Machine Check Architecture, Cache Safe technology, Enhanced Demand Based Switching, ECC, two memory controllers each with two SMI links to memory buffers for DDR3, for a combined memory bandwidth of 34 GB/s and capacity of 256 GB. The QPI bandwidth is 96 GB/s for cache coherency and 24 GB/s for I/O.
Poulson (32 nm)
All models support: Itanium New Instructions, XD bit, Intel VT-x, Intel VT-d, VT-i3, Hyper-threading, Turbo Boost, Enhanced Intel SpeedStep Technology, Cache-Safe technology, RAS with Advanced Machine Check Architecture, Instruction Replay technology, ECC, two memory controllers each with two SMI links to memory buffers for DDR3, for a combined memory bandwidth of 45 GB/s and capacity of 512 GB. The QPI bandwidth is 128 GB/s for cache coherency and 32 GB/s for I/O.