Dunno, looks like classic memory bottleneck to me. The m1 ultra has 800GB/sec, but I believe a bit more than half of that is available to the CPUs. The rest i

Dunno, looks like classic memory bottleneck to me. The m1 ultra has 800GB/sec, but I believe a bit more than half of that is available to the CPUs. The rest is for the GPU and various on chip accelerators. So with about half the cores (16 vs 28) and twice the bandwidth (say 420GB/sec vs 180 GB/sec) it manages twice the performance. Looks pretty impressive to me. Looks like the Apple is significantly less memory bottle necked than the 6 channel Xeon W.