Starting today, Amazon EC2 C7i, M7i, R7i and R7iz bare metal instances are available. Amazon EC2 M7i, C7i, and R7i instances are powered by custom 4th generation Intel Xeon Scalable processors, —available only on AWS — which offer up to 15% better performance over comparable x86-based Intel processors utilized by other cloud providers. Amazon EC2 R7iz instances are the fastest Sapphire Rapids based instances in the cloud with an all-core turbo frequency of 3.9 GHz.
Source:: Amazon AWS