c5ad.16xlarge
Compute optimized · c5ad series · AMD EPYC 7R32
- vCPU
- 64
- Memory
- 128 GiB
- Linux / hour
- $2.75
- Per month
- $2,009
- Per vCPU-hour
- $0.0430
- Per GiB-hour
- $0.0215
Analysis
The c5ad.16xlarge is a compute optimized instance in the c5ad series with 64 vCPUs and 128 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 $1,121 a month per instance: $2.75/hour against $4.29/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.16xlarge on AMD EPYC 7R32 costs $2.46/hour, 10% less ($210 a month).
On demand it costs $2.75/hour in US East (N. Virginia), $2,009 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 $1.73/hour, which beats on demand once it runs more than 63% of the time; three years brings it to $1.19/hour, 57% below on demand. Windows Server roughly doubles the bill at $5.70/hour, because the licence is charged per vCPU.
It has local instance storage (2 x 1200 GB NVMe SSD), which is fast but lost when the instance stops. Network: 20 Gigabit.
Price by region (USD per hour)
| Region | Linux | Windows | 1-yr RI | 3-yr RI | |
|---|---|---|---|---|---|
| N. Virginia us-east-1 | $2.75 | $5.70 | $1.73 | $1.19 | |
| Ohio us-east-2 | $2.75 | $5.70 | $1.73 | $1.19 | |
| Oregon us-west-2 | $2.75 | $5.70 | $1.73 | $1.19 | |
| São Paulo sa-east-1 | $4.29 | $7.23 | $2.70 | $1.85 | |
| Ireland eu-west-1 | $3.14 | $6.08 | $1.98 | $1.35 | |
| Frankfurt eu-central-1 | $3.20 | $6.14 | $2.02 | $1.38 | |
| Singapore ap-southeast-1 | $3.23 | $6.18 | $2.04 | $1.40 | |
| Sydney ap-southeast-2 | $3.62 | $6.56 | $2.28 | $1.56 |
Shared tenancy, no pre-installed software. Reserved rates are standard, no upfront, per hour. Prices as of 2026-11-04.
Same shape, other types
| Type | vCPU | Memory | $/hour | vs c5ad.16xlarge |
|---|---|---|---|---|
| hpc7g.16xlarge AWS Graviton3 Processor | 64 | 128 GiB | $1.68 | -39% |
| c6g.16xlarge AWS Graviton2 Processor | 64 | 128 GiB | $2.18 | -21% |
| c7g.16xlarge AWS Graviton3 Processor | 64 | 128 GiB | $2.32 | -16% |
| c6a.16xlarge AMD EPYC 7R13 Processor | 64 | 128 GiB | $2.45 | -11% |
| c6gd.16xlarge AWS Graviton2 Processor | 64 | 128 GiB | $2.46 | -11% |
| c5a.16xlarge AMD EPYC 7R32 | 64 | 128 GiB | $2.46 | -10% |
Cost calculator
Specs
| vCPU | 64 |
|---|---|
| Memory | 128 GiB (2.0 per vCPU) |
| Processor | AMD EPYC 7R32 |
| Clock | 3.3 GHz |
| Storage | 2 x 1200 NVMe SSD |
| Network | 20 Gigabit |
c5ad sizes
| c5ad.large | 2 vCPU | $0.0860 |
| c5ad.xlarge | 4 vCPU | $0.1720 |
| c5ad.2xlarge | 8 vCPU | $0.3440 |
| c5ad.4xlarge | 16 vCPU | $0.6880 |
| c5ad.8xlarge | 32 vCPU | $1.38 |
| c5ad.12xlarge | 48 vCPU | $2.06 |
| c5ad.16xlarge | 64 vCPU | $2.75 |
| c5ad.24xlarge | 96 vCPU | $4.13 |