Amazon's New EC2 M7a AMD EPYC "Genoa" Instances Deliver Leading Performance In The AWS Cloud
Generationally the 4th Gen AMD EPYC instances on AWS are a terrific upgrade over Zen 3, just as we've seen with all the bare metal Genoa(X) testing. On a performance-per-dollar basis the increased costs of M7a are justified over prior generation EPYC instances but for some workloads the in-house Graviton instances can be more cost effective.
In other cases of software being better optimized for x86_64, the m7a.16xlarge instance could be more than twice as fast as Graviton3(E) 16xlarge instances.