Starting today, Amazon Elastic Compute Cloud (Amazon EC2) C7i instances powered by custom 4th Gen Intel Xeon Scalable processors (code-named Sapphire Rapids) are available in US West (N. California), Europe (London), Canada (Central) and Asia Pacific (Mumbai, Seoul, Singapore, Sydney, Tokyo) regions. C7i instances supported by custom Intel processors, available only on AWS, offer up to 15% better performance over comparable x86-based Intel processors utilized by other cloud providers.
Source:: Amazon AWS