c8in.xlarge

Analysis

The c8in.xlarge is a compute optimized instance in the c8in series with 4 vCPUs and 8 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.xlarge on AWS Graviton4 costs $0.1595/hour, 41% less ($82.23 a month), though switching means rebuilding software for arm64. The other variants are the c8i-flex.xlarge at $0.1780, the c8i.xlarge at $0.1874 and the c8gd.xlarge at $0.1960.

Running it in N. Virginia instead of Sydney saves $60.71 a month per instance: $0.2722/hour against $0.3553/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 $0.2722/hour in US East (N. Virginia), or $199 for a 730-hour month.

Looking beyond its own line, 28 of 31 current types with 4 vCPUs and similar memory are cheaper. The cheapest of those is the c6g.xlarge on AWS Graviton2 at $0.1360/hour.