m6in.8xlarge

Analysis

The m6in.8xlarge is a general purpose instance in the m6in series with 32 vCPUs and 128 GiB of memory on Intel Xeon 8375C (Ice Lake) (up to 3.5 GHz), which makes it balanced at 4 GiB of memory per vCPU.

Within the same generation and size, the m6g.8xlarge on AWS Graviton2 costs $1.23/hour, 45% less ($727 a month), though switching means rebuilding software for arm64. The other variants are the m6a.8xlarge at $1.38, the m6gd.8xlarge at $1.45 and the m6i.8xlarge at $1.54.

Running it in N. Virginia instead of São Paulo saves $966 a month per instance: $2.23/hour against $3.55/hour, a 59% spread.

On demand it costs $2.23/hour in US East (N. Virginia), $1,626 a month if left running, which puts it mid-table for general purpose types at the 73rd percentile per vCPU ($0.0696 per vCPU-hour) and the 73rd percentile per GiB ($0.0174 per GiB-hour).

Looking beyond its own line, 26 of 37 current types with 32 vCPUs and similar memory are cheaper. The cheapest of those is the m7g.8xlarge on AWS Graviton3 at $1.31/hour.

It is size 5 of 9 in the m6in series. Stepping up to the m6in.12xlarge gives 48 vCPUs and 192 GiB for $813 more a month. Dropping to the m6in.4xlarge saves $813 a month.