c8in.2xlarge

Analysis

The c8in.2xlarge is a compute optimized instance in the c8in series with 8 vCPUs and 16 GiB of memory on Intel Xeon Scalable (Granite Rapids) (up to 3.9 GHz), which makes it compute-heavy at 2 GiB of memory per vCPU.

Within the same generation and size, the c8g.2xlarge on AWS Graviton4 costs $0.3190/hour, 41% less ($164 a month), though switching means rebuilding software for arm64. The other variants are the c8i-flex.2xlarge at $0.3561, the c8i.2xlarge at $0.3748 and the c8gd.2xlarge at $0.3919.

Running it in N. Virginia instead of Sydney saves $121 a month per instance: $0.5443/hour against $0.7106/hour, a 31% spread. It is not offered in Canada Central, São Paulo, London and Mumbai, so plan around that if you need a presence there.

Per vCPU it is one of the dearer compute optimized types: 92% of the 291 current types in the family cost less than its $0.0680 per vCPU-hour. The premium mostly pays for a newer processor or a specialised configuration. On demand it is $0.5443/hour in US East (N. Virginia), or $397 for a 730-hour month.

Looking beyond its own line, 28 of 31 current types with 8 vCPUs and similar memory are cheaper. The cheapest of those is the c6g.2xlarge on AWS Graviton2 at $0.2720/hour.