SPARC T-Series

The SPARC T-Series family of RISC processors and server computers, based on the SPARC V9 architecture, was originally developed by Sun Microsystems, and later by Oracle Corporation after its acquisition of Sun. Its distinguishing feature from earlier SPARC iterations is the introduction of Chip Multithreading (CMT) technology, a multithreading, multicore design intended to drive greater processor utilization at lower power consumption.

The first generation T-Series processor, the UltraSPARC T1, and servers based on it, were announced in December 2005. As later generations were introduced, the term "T-Series" was used to refer to the entire family of processors. An early example is The Register's use of the term in 2009. Sun did not officially use the term "T-Series" in its documentation or other literature prior to their acquisition by Oracle.

Sun Microsystems' Sun Fire and SPARC Enterprise product lines were based on early generations of CMT technology. The UltraSPARC T1 based Sun Fire T2000 and T1000 servers were launched in December 2005 and early 2006, respectively. They were later rebranded to match the name of the UltraSPARC T2 and T2 Plus based Sun SPARC Enterprise T5**0 servers.

In September 2010, Oracle announced a range of SPARC T3 processor based servers. These are branded as the "SPARC T3" series, the "SPARC Enterprise" brand being dropped.

The SPARC T3 series servers include the T3-1B, a blade server module that fits into the Sun Blade 6000 system. All other T3 based servers are rack mounted systems. Subsequent T-Series server generations also include a blade server in the same Sun Blade 6000 form factor.

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