c6g.4xlarge

Analysis

The c6g.4xlarge is a compute optimized instance in the c6g series with 16 vCPUs and 32 GiB of memory on AWS Graviton2 (up to 2.5 GHz), which makes it compute-heavy at 2 GiB of memory per vCPU.

Running it in Mumbai instead of São Paulo saves $363 a month per instance: $0.3408/hour against $0.8384/hour, a 146% spread.

Nothing else with 16 vCPUs and similar memory is cheaper: among 31 current same-shape types it has the lowest on-demand price.

At $0.5440/hour on demand in US East (N. Virginia), about $397 a month, the c6g.4xlarge is one of the cheaper ways to buy compute optimized capacity: only 2% of the 291 current compute optimized types cost less per vCPU-hour than its $0.0340.

It is the cheapest of the 5 processor variants AWS sells at this size and generation. The c6gn.4xlarge on AWS Graviton2 costs 27% more, and the c6a.4xlarge, the c6gd.4xlarge and the c6i.4xlarge also sit above it.

The newer c7g.4xlarge on AWS Graviton3 is 6.6% dearer at $0.5800/hour.

Reserving it for a year with no upfront payment cuts the Linux rate to $0.3427/hour, which beats on demand once it runs more than 63% of the time; three years brings it to $0.2350/hour, 57% below on demand.