c5d.9xlarge

Analysis

The c5d.9xlarge is a compute optimized instance in the c5d series with 36 vCPUs and 72 GiB of memory on Intel Xeon Platinum 8124M (up to 3.4 GHz), which makes it compute-heavy at 2 GiB of memory per vCPU.

Within the same generation and size, the c5.9xlarge on Intel Xeon Platinum 8124M costs $1.53/hour, 11% less ($145 a month). The other variants are the c5n.9xlarge at $1.94.

Running it in N. Virginia instead of São Paulo saves $696 a month per instance: $1.73/hour against $2.68/hour, a 55% spread.

Looking beyond its own line, 2 of 3 current types with 36 vCPUs and similar memory are cheaper. The cheapest of those is the c4.8xlarge on Intel Xeon E5-2666 v3 (Haswell) at $1.59/hour.

Reserving it for a year with no upfront payment cuts the Linux rate to $1.09/hour, which beats on demand once it runs more than 63% of the time; three years brings it to $0.7260/hour, 58% below on demand. Windows Server roughly doubles the bill at $3.38/hour, because the licence is charged per vCPU.

It has local instance storage (1 x 900 GB NVMe SSD), which is fast but lost when the instance stops. Network: 10 Gigabit.

On demand it costs $1.73/hour in US East (N. Virginia), $1,261 a month if left running, which puts it mid-table for compute optimized types at the 50th percentile per vCPU ($0.0480 per vCPU-hour) and the 54th percentile per GiB ($0.0240 per GiB-hour).