When it comes to exaflops it is the floppiest

El Capitan has been ranked as the most powerful supercomputer in the world. It boasts a benchmark performance of 1.742 exaflops, or 1.742 quintillion calculations per second, far exceeding its initial target.

AMD EPYC and HPE  looking after US nukes

AMD and HPE have announced with the Lawrence Livermore National Laboratory (LLNL) that El Capitan, the upcoming exascale-class supercomputer, will have more than 2 exaflops of double precision performance powered by next generation AMD EPYC CPUs and Radeon Instinct GPUs.

Focus on user experience and performance

During WWDC 2015 event in San Francisco, Apple has unveiled the new version of its OS X operating system, the OS X El Capitan.