hpc7g.8xlarge

Analysis

The hpc7g.8xlarge is a compute optimized instance in the hpc7g series with 32 vCPUs and 128 GiB of memory on AWS Graviton3 (up to 2.6 GHz), which makes it balanced at 4 GiB of memory per vCPU.

Running it in N. Virginia instead of Tokyo saves $313 a month per instance: $1.68/hour against $2.11/hour, a 25% spread. It is not offered in Ohio, Oregon, Canada Central, São Paulo, London, Frankfurt, Mumbai, Singapore and Sydney, so plan around that if you need a presence there.

It is size 2 of 3 in the hpc7g series. Stepping up to the hpc7g.16xlarge gives 64 vCPUs and 128 GiB for $0.00000 more a month. Dropping to the hpc7g.4xlarge saves $0.00000 a month. Unit price is not flat across the series ($0.0263 to $0.1052 per vCPU-hour), so the size changes the rate you pay.

Reserving it for a year with no upfront payment cuts the Linux rate to $1.33/hour, which beats on demand once it runs more than 79% of the time; three years brings it to $1.16/hour, 31% below on demand.

On demand it costs $1.68/hour in US East (N. Virginia), $1,229 a month if left running, which puts it mid-table for compute optimized types at the 63rd percentile per vCPU ($0.0526 per vCPU-hour) and the 3rd percentile per GiB ($0.0132 per GiB-hour).