The fastest microprocessor in the world is now a SPARC, according to a test result published this month ...

... It's Fujitsu's quad core SPARC64 VII. With a result of 25 on SPECfp2006 (a floating-point speed measurement rather than throughput), no other processor comes close. It is 1.14 times faster than its nearest competitor, Intel Xeon X5272.

The SPARC64 VII runs two threads per core simultaneously (SMT) and has a clock speed of 2.52 GHz. Each core has 64 KB of 1st level 2-way set-associative instruction cache and 64 KB of 1st level 2-way set-associative data cache. At the 2nd level, there are 6 MB of 12-way set-associative cache shared by instructions and data, and shared by all four cores. Like its predecessor, the SPARC64 VII is superscalar (it would have to be to support SMT), and employs out-of-order execution, branch prediction and non-blocking cache.