r7i.24xlarge

Analysis

The r7i.24xlarge is a memory optimized instance in the r7i series with 96 vCPUs and 768 GiB of memory on Intel Xeon Scalable (Sapphire Rapids) (up to 3.2 GHz), which makes it memory-heavy at 8 GiB of memory per vCPU.

It is the cheapest of the 2 processor variants AWS sells at this size and generation. The r7a.24xlarge on AMD EPYC 9R14 costs 15% more, and no others also sit above it.

Running it in N. Virginia instead of São Paulo saves $2,759 a month per instance: $6.35/hour against $10.13/hour, a 60% spread.

On demand it costs $6.35/hour in US East (N. Virginia), $4,636 a month if left running, which puts it mid-table for memory optimized types at the 26th percentile per vCPU ($0.0662 per vCPU-hour) and the 40th percentile per GiB ($0.00827 per GiB-hour).

Compared with the previous generation, it costs 5.0% more than the r6i.24xlarge on Intel Xeon 8375C (Ice Lake) ($221 more a month per instance), in exchange for the newer processor. The newer r8i.24xlarge on Intel Xeon Scalable (Granite Rapids) is 5.0% dearer at $6.67/hour.

Looking beyond its own line, 7 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.