c8gb.4xlarge

Analysis

The c8gb.4xlarge is a compute optimized instance in the c8gb series with 16 vCPUs and 32 GiB of memory on AWS Graviton4 (up to 2.8 GHz), which makes it compute-heavy at 2 GiB of memory per vCPU.

Within the same generation and size, the c8g.4xlarge on AWS Graviton4 costs $0.6381/hour, 33% less ($226 a month). The other variants are the c8i-flex.4xlarge at $0.7122, the c8i.4xlarge at $0.7497 and the c8gd.4xlarge at $0.7838.

Running it in N. Virginia instead of Frankfurt saves $96.13 a month per instance: $0.9480/hour against $1.08/hour, a 14% spread. It is not offered in Canada Central, São Paulo, London, Mumbai, Singapore, Sydney and Tokyo, so plan around that if you need a presence there.

Per vCPU it is one of the dearer compute optimized types: 82% of the 291 current types in the family cost less than its $0.0592 per vCPU-hour. The premium mostly pays for a newer processor or a specialised configuration. On demand it is $0.9480/hour in US East (N. Virginia), or $692 for a 730-hour month.

Looking beyond its own line, 25 of 31 current types with 16 vCPUs and similar memory are cheaper. The cheapest of those is the c6g.4xlarge on AWS Graviton2 at $0.5440/hour.