c6in.32xlarge

Analysis

The c6in.32xlarge is a compute optimized instance in the c6in series with 128 vCPUs and 256 GiB of memory on Intel Xeon 8375C (Ice Lake) (up to 3.5 GHz), which makes it compute-heavy at 2 GiB of memory per vCPU.

Within the same generation and size, the c6a.32xlarge on AMD EPYC 7R13 costs $4.90/hour, 33% less ($1,724 a month). The other variants are the c6i.32xlarge at $5.44 and the c6id.32xlarge at $6.45.

Per vCPU it is one of the dearer compute optimized types: 78% of the 291 current types in the family cost less than its $0.0567 per vCPU-hour. The premium mostly pays for the very fast networking. On demand it is $7.26/hour in US East (N. Virginia), or $5,298 for a 730-hour month.

Running it in Mumbai instead of São Paulo saves $2,845 a month per instance: $7.26/hour against $11.16/hour, a 54% spread.

Looking beyond its own line, 6 of 9 current types with 128 vCPUs and similar memory are cheaper. The cheapest of those is the c8i.32xlarge on Intel Xeon Scalable (Granite Rapids) at $6.00/hour.

It is the largest of the 9 c6in sizes. Dropping to the c6in.24xlarge saves $1,325 a month.

Reserving it for a year with no upfront payment cuts the Linux rate to $4.57/hour, which beats on demand once it runs more than 63% of the time; three years brings it to $2.64/hour, 64% below on demand. Windows Server roughly adds 81% to the bill at $13.15/hour, because the licence is charged per vCPU.