r7gd.4xlarge

Analysis

The r7gd.4xlarge is a memory optimized instance in the r7gd series with 16 vCPUs and 128 GiB of memory on AWS Graviton3 (up to 2.5 GHz), which makes it memory-heavy at 8 GiB of memory per vCPU.

Within the same generation and size, the r7g.4xlarge on AWS Graviton3 costs $0.8568/hour, 21% less ($169 a month). The other variants are the r7i.4xlarge at $1.06, the r7a.4xlarge at $1.22 and the r7iz.4xlarge at $1.49.

Running it in Mumbai instead of São Paulo saves $744 a month per instance: $0.7040/hour against $1.72/hour, a 145% spread.

Compared with the previous generation, it costs 18% more than the r6gd.4xlarge on AWS Graviton2 ($122 more a month per instance), in exchange for the newer processor. The newer r8gd.4xlarge on AWS Graviton4 is 8.0% dearer at $1.18/hour.

On demand it costs $1.09/hour in US East (N. Virginia), $795 a month if left running, which puts it mid-table for memory optimized types at the 29th percentile per vCPU ($0.0680 per vCPU-hour) and the 41st percentile per GiB ($0.00850 per GiB-hour).

It has local instance storage (1 x 950 GB NVMe SSD), which is fast but lost when the instance stops. Network: Up to 15 Gigabit.

Looking beyond its own line, 13 of 42 current types with 16 vCPUs and similar memory are cheaper. The cheapest of those is the r6g.4xlarge on AWS Graviton2 at $0.8064/hour.