El Capitan Is The World’s Fastest Supercomputer As Of Jan 2026, At Lawrence Livermore Lab In California, Run By The U.S. DOE. It Crunches ~1.8 Quintillion (18 Zeros) Calculations/Sec, Beating The Previous Champ, Frontier. This $600M Machine By HPE/AMD Mainly Simulates U.S Nuclear Weapons Safely, Plus Climate, Fusion Energy & A.I Research.
Lawrence Livermore National Laboratory (LLNL), in collaboration with the National Nuclear Security Administration (NNSA), Hewlett Packard Enterprise (HPE) and AMD, have officially unveiled El Capitan as the world’s most powerful supercomputer and first exascale system dedicated to national security. Verified at 1.742 exaFLOPs (1.742 quintillion calculations per second) on the High Performance Linpack — the standard benchmark used by the Top500 organization to evaluate supercomputing performance — El Capitan is the fastest computing system ever benchmarked. The system has a total peak





