t4g.xlarge

Analysis

The t4g.xlarge is a general purpose instance in the t4g series with 4 vCPUs and 16 GiB of memory on AWS Graviton2 (up to 2.5 GHz), which makes it balanced at 4 GiB of memory per vCPU.

Running it in Mumbai instead of São Paulo saves $91.10 a month per instance: $0.0896/hour against $0.2144/hour, a 139% spread.

Nothing else with 4 vCPUs and similar memory is cheaper: among 42 current same-shape types it has the lowest on-demand price.

At $0.1344/hour on demand in US East (N. Virginia), about $98.11 a month, the t4g.xlarge is one of the cheaper ways to buy general purpose capacity: only 6% of the 354 current general purpose types cost less per vCPU-hour than its $0.0336.

It is size 6 of 7 in the t4g series. Stepping up to the t4g.2xlarge gives 8 vCPUs and 32 GiB for $98.11 more a month. Dropping to the t4g.large saves $49.06 a month. Unit price is not flat across the series ($0.00210 to $0.0336 per vCPU-hour), so the size changes the rate you pay.

Reserving it for a year with no upfront payment cuts the Linux rate to $0.0843/hour, which beats on demand once it runs more than 63% of the time; three years brings it to $0.0580/hour, 57% below on demand.