c6gd.12xlarge

Analysis

The c6gd.12xlarge is a compute optimized instance in the c6gd series with 48 vCPUs and 96 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 $1,226 a month per instance: $1.18/hour against $2.86/hour, a 143% spread.

The newer c7gd.12xlarge on AWS Graviton3 is 18% dearer at $2.18/hour.

Within the same generation and size, the c6g.12xlarge on AWS Graviton2 costs $1.63/hour, 11% less ($154 a month). The other variants are the c6a.12xlarge at $1.84, the c6i.12xlarge at $2.04 and the c6gn.12xlarge at $2.07.

At $1.84/hour on demand in US East (N. Virginia), about $1,346 a month, the c6gd.12xlarge is one of the cheaper ways to buy compute optimized capacity: only 11% of the 291 current compute optimized types cost less per vCPU-hour than its $0.0384.

It has local instance storage (2 x 1425 GB NVMe SSD), which is fast but lost when the instance stops. Network: 20 Gigabit.

Looking beyond its own line, 3 of 30 current types with 48 vCPUs and similar memory are cheaper. The cheapest of those is the c7g.12xlarge on AWS Graviton3 at $1.74/hour.

Reserving it for a year with no upfront payment cuts the Linux rate to $1.16/hour, which beats on demand once it runs more than 63% of the time; three years brings it to $0.7963/hour, 57% below on demand.