Amazon ElastiCache now supports additional sizes of the Graviton3-based network-optimized C7gn node type. ElastiCache C7gn nodes feature the new 5th generation AWS Nitro Cards and enable you to achieve the highest network bandwidth across ElastiCache node families for network-intensive workloads. With this launch, ElastiCache C7gn nodes are available in 7 different node sizes (large to 16xlarge) for increased scalability. ElastiCache C7gn nodes offer up to 200 Gbps network bandwidth.
Source:: Amazon AWS