The Multicore Era Over the past ~15 years, server processors from Intel and AMD have evolved from the early quad-core processors to the current monsters with over 50 cores per socket. The memory subsystems have grown at similar rates, from 3-4 DRAM channels at 1.333 GT/s transfer rates to 8-12… read more
Performance
The evolution of single-core bandwidth in multicore systems — update
In April 2023 I posted some results and comments The evolution of single-core bandwidth in multicore processors illustrating the (slow) growth in single-core memory bandwidth over time in Intel and AMD multicore processors. Here is an update to the summary chart, adding the AMD EPYC 4 (“Genoa”) processors. Genoa delivers… read more
The evolution of single-core bandwidth in multicore processors
The primary metric for memory bandwidth in multicore processors is that maximum sustained performance when using many cores. For most high-end processors these values have remained in the range of 75% to 85% of the peak DRAM bandwidth of the system over the past 15-20 years — an amazing accomplishment… read more