r6in.24xlarge

Analysis

The r6in.24xlarge is a memory optimized instance in the r6in series with 96 vCPUs and 768 GiB of memory on Intel Xeon 8375C (Ice Lake) (up to 3.5 GHz), which makes it memory-heavy at 8 GiB of memory per vCPU.

Within the same generation and size, the r6a.24xlarge on AMD EPYC 7R13 costs $5.44/hour, 35% less ($2,135 a month). The other variants are the r6i.24xlarge at $6.05, the r6id.24xlarge at $7.26 and the r6idn.24xlarge at $9.38.

Running it in N. Virginia instead of Sydney saves $1,312 a month per instance: $8.37/hour against $10.16/hour, a 21% spread. It is not offered in São Paulo, London and Mumbai, so plan around that if you need a presence there.

On demand it costs $8.37/hour in US East (N. Virginia), $6,109 a month if left running, which puts it mid-table for memory optimized types at the 60th percentile per vCPU ($0.0872 per vCPU-hour) and the 75th percentile per GiB ($0.0109 per GiB-hour).

Looking beyond its own line, 22 of 35 current types with 96 vCPUs and similar memory are cheaper. The cheapest of those is the r5a.24xlarge on AMD EPYC 7571 at $5.42/hour.

It is size 8 of 9 in the r6in series. Stepping up to the r6in.32xlarge gives 128 vCPUs and 1024 GiB for $2,036 more a month. Dropping to the r6in.16xlarge saves $2,036 a month.