r8g.48xlarge

Analysis

The r8g.48xlarge is a memory optimized instance in the r8g series with 192 vCPUs and 1536 GiB of memory on AWS Graviton4 (up to 2.7 GHz), which makes it memory-heavy at 8 GiB of memory per vCPU.

Running it in Mumbai instead of São Paulo saves $7,351 a month per instance: $7.93/hour against $18.00/hour, a 127% spread.

It is the cheapest of the 5 processor variants AWS sells at this size and generation. The r8id.48xlarge on Intel Xeon Scalable (Granite Rapids) costs 41% more, and the r8i.48xlarge, the r8gd.48xlarge and the r8a.48xlarge also sit above it.

At $11.31/hour on demand in US East (N. Virginia), about $8,257 a month, the r8g.48xlarge is one of the cheaper ways to buy memory optimized capacity: only 12% of the 385 current memory optimized types cost less per vCPU-hour than its $0.0589.

The newer r9g.48xlarge on AWS Graviton5 is 9.0% dearer at $12.33/hour.

It is the largest of the 10 r8g sizes. Dropping to the r8g.24xlarge saves $4,128 a month.

Looking beyond its own line, 1 of 20 current types with 192 vCPUs and similar memory are cheaper. The cheapest of those is the r6a.48xlarge on AMD EPYC 7R13 at $10.89/hour.

Reserving it for a year with no upfront payment cuts the Linux rate to $7.48/hour, which beats on demand once it runs more than 66% of the time; three years brings it to $5.13/hour, 55% below on demand.