r7g.16xlarge

Analysis

The r7g.16xlarge is a memory optimized instance in the r7g series with 64 vCPUs and 512 GiB of memory on AWS Graviton3 (up to 2.5 GHz), which makes it memory-heavy at 8 GiB of memory per vCPU.

Running it in Mumbai instead of São Paulo saves $2,228 a month per instance: $2.40/hour against $5.45/hour, a 127% spread.

At $3.43/hour on demand in US East (N. Virginia), about $2,502 a month, the r7g.16xlarge is one of the cheaper ways to buy memory optimized capacity: only 3% of the 385 current memory optimized types cost less per vCPU-hour than its $0.0536.

It is the cheapest of the 5 processor variants AWS sells at this size and generation. The r7iz.16xlarge on Intel Xeon Scalable (Sapphire Rapids) costs 74% more, and the r7i.16xlarge, the r7gd.16xlarge and the r7a.16xlarge also sit above it.

Compared with the previous generation, it costs 6.2% more than the r6g.16xlarge on AWS Graviton2 ($147 more a month per instance), in exchange for the newer processor. The newer r8g.16xlarge on AWS Graviton4 is 10% dearer at $3.77/hour.

It is the largest of the 8 r7g sizes. Dropping to the r7g.12xlarge saves $625 a month.

Reserving it for a year with no upfront payment cuts the Linux rate to $2.27/hour, which beats on demand once it runs more than 66% of the time; three years brings it to $1.55/hour, 55% below on demand.