AmpereOne Performance Scaling From 32 To 192 Cores, Core-For-Core Benchmarks Against Ampere Altra Max
One of the other motivations for the AmpereOne core scaling and offlining some of the cores was wanting to see how AmpereOne could compare to Ampere Altra Max at the same core count. With only having the AmpereOne A192-32X and then the Ampere Altra Max M128-30 when it comes to the older CPUs, this meant dropping the AmpereOne A192-32X to 128 cores with 64 cores offlined. This still gives the AmpereOne A192-32X a 200MHz clock advantage over the Ampere Altra Max M128-30 at 3.0GHz. Also keep in mind Ampere Altra (Max) is at eight channel DDR4-3200 memory while AmpereOne is at eight channel DDR5-5200 memory. But in any event core-for-core this should help provide insight over IPC advantages to the newer AArch64 processor that also boasts 2MB of L2 cache per core rather than 1MB with Altra.
At 128 cores, there were some very solid gains with AmpereOne over the former Ampere Altra Max.
The CPU power use at 128 cores for the AmpereOne was a 181 Watt average while compiling LLVM compared to 120 Watts with the Ampere Altra Max M128-30. The higher base CPU power consumption remains very apparent at 103 Watts versus a 24 Watt minimum with the Altra Max processor.
The larger cache and CPU improvements helped out a lot in real-world workloads like PostgreSQL.