Lawrence Livermore National Laboratory

U.S. Department of Energy, HPE and AMD have partnered with Lawrence Livermore National Laboratory to develop El Capitan, the world fastest, verified supercomputer in the world.

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Front view of El Capitan supercomputer.

Hewlett Packard Enterprise delivers world's fastest supercomputer, "El Capitan," for Lawrence Livermore National Laboratory

El Capitan achieves 1.809 exaflops, becoming the most powerful supercomputer in the world. The supercomputer features 100% fanless direct liquid-cooling technology from HPE and ranks as one of the top 20 most energy-efficient supercomputers on the Green500 list.

The world’s only three verified exascale supercomputers, all built by HPE, take the top three spots on list of the most powerful systems.

  • #1

    Built by HPE, LLNL’s El Capitan supercomputer is #1 on the Top500 list%3Ca%20href%3D%22https%3A%2F%2Ftop500.org%22%20target%3D%22_blank%22%20rel%3D%22noopener%20noreferrer%22%20external-link%3D%22true%22%20data-analytics-region-id%3D%22footnote_tip%7Clink_click%22%3ETop500%3C%2Fa%3E%2C%20November%202025 with 1.809 exaflops of performance

  • #1

    Built by HPE, LLNL’s El Capitan supercomputer is #1 on the HPCG list with 17.41 petaflops of performance%3Ca%20href%3D%22https%3A%2F%2Ftop500.org%22%20target%3D%22_blank%22%20rel%3D%22noopener%20noreferrer%22%20external-link%3D%22true%22%20data-analytics-region-id%3D%22footnote_tip%7Clink_click%22%3ETop500%3C%2Fa%3E%2C%20November%202025

  • #1

    Built by HPE, LLNL’s El Capitan supercomputer is #1 on the HPL-MxP list with 16.7 exaflops of performance%3Ca%20href%3D%22https%3A%2F%2Ftop500.org%22%20target%3D%22_blank%22%20rel%3D%22noopener%20noreferrer%22%20external-link%3D%22true%22%20data-analytics-region-id%3D%22footnote_tip%7Clink_click%22%3ETop500%3C%2Fa%3E%2C%20November%202025