c9gd.8xlarge

Analysis

The c9gd.8xlarge is a compute optimized instance in the c9gd series with 32 vCPUs and 64 GiB of memory on AWS Graviton5 (up to 3.3 GHz), which makes it compute-heavy at 2 GiB of memory per vCPU.

Within the same generation and size, the c9g.8xlarge on AWS Graviton5 costs $1.39/hour, 19% less ($232 a month).

Running it in N. Virginia instead of Tokyo saves $338 a month per instance: $1.71/hour against $2.17/hour, a 27% spread. It is not offered in Canada Central, São Paulo, Ireland, London, Mumbai and Sydney, so plan around that if you need a presence there.

Compared with the previous generation, it costs 9.0% more than the c8gd.8xlarge on AWS Graviton4 ($103 more a month per instance), in exchange for the newer processor.

On demand it costs $1.71/hour in US East (N. Virginia), $1,247 a month if left running, which puts it mid-table for compute optimized types at the 65th percentile per vCPU ($0.0534 per vCPU-hour) and the 69th percentile per GiB ($0.0267 per GiB-hour).

Looking beyond its own line, 18 of 28 current types with 32 vCPUs and similar memory are cheaper. The cheapest of those is the c6g.8xlarge on AWS Graviton2 at $1.09/hour.

It has local instance storage (1 x 1900 GB NVMe SSD), which is fast but lost when the instance stops. Network: 17 Gigabit.