The machines configurations were:

Neoverse N1 - 96 cores.
Neoverse N2 - 64 cores.
Neoverse V1 - 64 cores.
Neoverse V2 - 96 cores.
x86 (Xeon 8480) - 56 cores.
AMD Epyc 9654 - 96 cores.


Threads N1              N2      V1      V2      X86     Epyc
1       0.87            1.00    0.97    1.02    0.96    0.73
2       4.15            3.81    3.93    4.20    6.77    2.93
4       8.91            9.41    8.86    10.22   14.53   7.53
8       15.30           23.48   21.21   21.51   15.97   8.25
16      14.10           36.09   44.72   28.93   40.97   42.84
24      27.81           35.33   53.60   44.22   47.68   65.50
32      24.56           44.40   48.35   46.74   55.92   96.85
48      27.50           44.85   46.22   28.49   57.21   116.50
64      563.51          49.56   54.24   23.08   66.93   172.86
96      1,928.06        48.86   48.18   27.62   59.47   157.15