SPARC64TM XII: Fujitsu's latest 12 core processor for mission critical servers

Abstract

This paper describes the design, microarchitecture, and performance of the latest Fujitsu SPARC64 XII 12 core microprocessor which has been developed for high performance, mission critical servers. Dual instruction pipelines, 8-way SMT (Simultaneous Multi-Threading), a high CPU frequency of over 4 GHz, and a 12 core design have doubled the chip performance compared with the previous SPARC64 X+, while keeping its high single thread performance.