AMD Opteron Vs EPYC: How AMD Server Performance Evolved Over 10 Years (phoronix.com)

New submitter fstack writes: Phoronix has carried out tests comparing AMD's high-end EPYC 7601 CPU to AMD Opteron CPUs from about ten years ago, looking at the EPYC/Opteron Linux performance and power efficiency. Both on the raw performance and performance-per-Watt, the numbers are quite staggering though the single-threaded performance hasn't evolved quite as much. The EPYC 7601 is a $4,200 USD processor with 32 cores / 64 threads. The first of many tests was with NAS Parallel Benchmarks: "For a heavily threaded test like this, going from a single Opteron 2300 series to the EPYC 7601 yielded around a 40x increase in performance," reports Phoronix. "Not bad when also considering it was only a 16x increase in the thread count (4 physical cores to 32 cores / 64 threads). The EPYC 7601 has a lower base clock frequency than the Opteron 2300 CPUs tested but has a turbo/boost frequency higher, among many architectural advantages over these K10 Opterons. With the NASA test's Lower-Upper Gauss-Seidel solver, going from the dual Opteron 2384 processors to a single EPYC 7601 yields around a 25x improvement in performance over the past decade of AMD server CPUs. Or in looking at the performance-per-Watt with the LU.C test, it's also around a 25x improvement over these older Opterons."

Comments

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[Gravis Zero]

They did a comparison between the highest end Intel chips and the EPYC 7601. Not to spoil it but EPYC blew the panties straight off of Intel's chips while using less power. It's no wonder Intel has been flailing in the media.

Re:Not that impressive

[Kjella]

It's been dead for some time. (...) 6.5 years and only 2x the oomph on the desktop in the midrange price bracket. I used to see that sort of improvement (and upgrade accordingly) every 2 years, but no longer.

It's getting very near the end, 10nm is already shipping but not on desktop chips, 7nm gets exotic with EUV but is probably doable but 5nm is a "maybe, if we get all the crazy quantum effects worked out". Even if they pull another rabbit out of the hat the silicon lattice constant is 0.543 nm which is a lot more fundamental problem than all the other issues they've found workarounds for. You're literally down to counting atoms, my guess is that by 2025 they've reached the end of the line. Not just a speed bump but like permanently. At least for anything remotely resembling the processors we have today.