c7gn.16xlarge

Analysis

The c7gn.16xlarge is a compute optimized instance in the c7gn series with 64 vCPUs and 128 GiB of memory on AWS Graviton3 (up to 2.6 GHz), which makes it compute-heavy at 2 GiB of memory per vCPU.

Within the same generation and size, the c7g.16xlarge on AWS Graviton3 costs $2.32/hour, 42% less ($1,222 a month). The other variants are the c7i-flex.16xlarge at $2.71, the c7i.16xlarge at $2.86 and the c7gd.16xlarge at $2.90.

Compared with the previous generation, it costs 44% more than the c6gn.16xlarge on AWS Graviton2 ($897 more a month per instance), in exchange for the newer processor. The newer c8gn.16xlarge on AWS Graviton4 is 5.0% cheaper at $3.79/hour, which makes the c7gn.16xlarge hard to justify for new deployments.

Running it in N. Virginia instead of Tokyo saves $762 a month per instance: $3.99/hour against $5.04/hour, a 26% spread. It is not offered in Canada Central, São Paulo, Frankfurt, Mumbai, Singapore and Sydney, so plan around that if you need a presence there.

Per vCPU it is one of the dearer compute optimized types: 87% of the 291 current types in the family cost less than its $0.0624 per vCPU-hour. The premium mostly pays for the very fast networking. On demand it is $3.99/hour in US East (N. Virginia), or $2,915 for a 730-hour month.