c5ad.large

Analysis

The c5ad.large is a compute optimized instance in the c5ad series with 2 vCPUs and 4 GiB of memory on AMD EPYC 7R32 (up to 3.3 GHz), which makes it compute-heavy at 2 GiB of memory per vCPU.

Running it in N. Virginia instead of São Paulo saves $35.04 a month per instance: $0.0860/hour against $0.1340/hour, a 56% spread. It is not offered in Canada Central, London, Mumbai and Tokyo, so plan around that if you need a presence there.

Within the same generation and size, the c5a.large on AMD EPYC 7R32 costs $0.0770/hour, 10% less ($6.57 a month). The other variants are the c5.large at $0.0850, the c5d.large at $0.0960 and the c5n.large at $0.1080.

On demand it costs $0.0860/hour in US East (N. Virginia), $62.78 a month if left running, which puts it mid-table for compute optimized types at the 28th percentile per vCPU ($0.0430 per vCPU-hour) and the 32nd percentile per GiB ($0.0215 per GiB-hour).

Reserving it for a year with no upfront payment cuts the Linux rate to $0.0540/hour, which beats on demand once it runs more than 63% of the time; three years brings it to $0.0370/hour, 57% below on demand. Windows Server roughly doubles the bill at $0.1780/hour, because the licence is charged per vCPU.