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HPC6

HPC6 is number eight on the June 2026 TOP500 at 477.90 petaflops per second. It is an earlier Eni HPE Cray system with MI250X accelerators, behind Eni’s HPC7.

HPC6 is 477.9 Pflop/s, an official figure.

Also known as Eni HPC6
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HPL Rmax

477.9Pflop/s

TOP500, June 2026, rank 8. HPC6, HPE Cray EX235a, AMD Optimized 3rd Generation EPYC 64 cores at 2 GHz, AMD Instinct MI250X, Slingshot-11, RHEL 8.9, HPE, at Eni S.p.A., Italy. Cores 3,143,520. Rmax 477.90 Pflop/s. Rpeak 606.97 Pflop/s. Power 8,461 kW. The figure is HPL Rmax.

OfficialTOP500 (opens source in a new tab)

Quick answers

People also ask

How fast is HPC6?

HPC6 is 477.9 Pflop/s, an official figure.

Is that figure claimed or verified?

HPC6 is labeled Official. Ratified by a governing body such as the FIA, World Athletics or Guinness World Records.

What is the source?

The figure cites TOP500, “TOP500 June 2026, HPC6 row.”

Where does HPC6 rank?

HPC6 is 8th of 10 on Fastest Supercomputers.

Mechanism

Why it's so fast

HPC6 is ranked on its June 2026 TOP500 HPL Rmax of 477.90 Pflop/s. Rmax is the Linpack rate the benchmark measured. Rpeak, published beside it, is a theoretical peak and is not the sort key.

Rmax
477.90 Pflop/s
Cores
3,143,520
Power
8,461 kW

  1. The chip on the row

    HPC6 is an HPE Cray EX235a at Eni, with AMD EPYC processors, 64 cores at 2 GHz, and MI250X accelerators, on Slingshot-11, running RHEL 8.9. The table lists 3,143,520 cores, Rpeak 606.97 Pflop/s, and 8,461 kW.

  2. What does not count

    HPC7 at the same company uses MI300A accelerators and posts 571.50 Pflop/s. The two rows are different machines. This rank is HPC6’s own HPL Rmax, not a combined Eni total.

Provenance

Every measurement

Claimed, measured and official figures side by side, each with its source. The ranked figure is marked.

  1. 477.9Pflop/sRanked figure

    TOP500, June 2026, rank 8. HPC6, HPE Cray EX235a, AMD Optimized 3rd Generation EPYC 64 cores at 2 GHz, AMD Instinct MI250X, Slingshot-11, RHEL 8.9, HPE, at Eni S.p.A., Italy. Cores 3,143,520. Rmax 477.90 Pflop/s. Rpeak 606.97 Pflop/s. Power 8,461 kW. The figure is HPL Rmax.

    Rpeak is 606.97 Pflop/s. HPC7, also at Eni, is a separate row.

    Official
    TOP500 (opens source in a new tab)

Reference

Specs

Rmax
477.90 Pflop/s
Rpeak
606.97 Pflop/s
Cores
3,143,520
Power
8,461 kW

Context

Background

HPC6 is number eight on the June 2026 TOP500, and it is a different machine from Eni’s HPC7 at number six. The HPL Rmax is 477.90 petaflops per second. The row is an HPE Cray EX235a with AMD 3rd-generation EPYC processors, 64 cores at 2 GHz, and AMD Instinct MI250X accelerators, on Slingshot-11, running RHEL 8.9, at Eni in Italy. The table lists 3,143,520 cores, Rpeak 606.97 petaflops per second, and 8,461 kW. The figure is 477.90 Pflop/s, qualifier official.

HPC7 uses the newer MI300A node and a higher Rmax. The two Eni systems are separate rows because the TOP500 lists them as separate systems.

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