c6gd.8xlarge

Analysis

The c6gd.8xlarge is a compute optimized instance in the c6gd series with 32 vCPUs and 64 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 $818 a month per instance: $0.7840/hour against $1.90/hour, a 143% spread.

The newer c7gd.8xlarge on AWS Graviton3 is 18% dearer at $1.45/hour.

Within the same generation and size, the c6g.8xlarge on AWS Graviton2 costs $1.09/hour, 11% less ($103 a month). The other variants are the c6a.8xlarge at $1.22, the c6i.8xlarge at $1.36 and the c6gn.8xlarge at $1.38.

At $1.23/hour on demand in US East (N. Virginia), about $897 a month, the c6gd.8xlarge 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 (1 x 1900 GB NVMe SSD), which is fast but lost when the instance stops. Network: 12 Gigabit.

Looking beyond its own line, 3 of 28 current types with 32 vCPUs and similar memory are cheaper. The cheapest of those is the c7g.8xlarge on AWS Graviton3 at $1.16/hour.

Reserving it for a year with no upfront payment cuts the Linux rate to $0.7741/hour, which beats on demand once it runs more than 63% of the time; three years brings it to $0.5308/hour, 57% below on demand.