POWER5

The POWER5 is a microprocessor developed and fabricated by IBM. It is an improved version of the POWER4. The principal improvements are support for simultaneous multithreading (SMT) and an on-die memory controller. The POWER5 is a dual-core microprocessor, with each core supporting one physical thread and two logical threads, for a total of two physical threads and four logical threads.

The POWER5 is a microprocessor developed and fabricated by IBM. It is an improved version of the POWER4. The principal improvements are support for simultaneous multithreading (SMT) and an on-die memory controller. The POWER5 is a dual-core microprocessor, with each core supporting one physical thread and two logical threads, for a total of two physical threads and four logical threads.

References

"IBM Previews Power5". (8 September 2003). Microprocessor Report. Clabes, Joachim et al. (2004). "Design and Implementation of the POWER5 Microprocessor". Proceedings of 2004 IEEE International Solid-State Circuits Conference. Glaskowsky, Peter N. (14 October 2003). "IBM Raises Curtain on Power5". Microprocessor Report. Kalla, Ron; Sinharoy, Balaram; Tendler, Joel M. (2004). "IBM Power5 Chip: A Dual-Core Multithreaded Processor". IEEE Micro. Krewell, Kevin (22 December 2003). "Power5 Tops On Bandwidth". Microprocessor Report. Sinharoy, Balaram et al. (2005). "POWER5 System Microarchitecture". IBM Journal of Research and Development. Vance, Ashlee (4 October 2005). "IBM pumps Unix line full of Power5+". The Register. Sizing up the Super Heavyweights, a comparison and analysis of the POWER5 and Montecito, that explains the major changes between the POWER4 to the POWER5, along with performance estimates A High-Performance IBM Power5+ p5-575 Cluster 1600 and DDN S2A9550 Storage, Texas A&M University

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