c8gn.16xlarge
Compute optimized · c8gn series · AWS Graviton4 Processor
- vCPU
- 64
- Memory
- 128 GiB
- Linux / hour
- $3.79
- Per month
- $2,768
- Per vCPU-hour
- $0.0592
- Per GiB-hour
- $0.0296
Analysis
The c8gn.16xlarge is a compute optimized instance in the c8gn series with 64 vCPUs and 128 GiB of memory on AWS Graviton4 (up to 2.8 GHz), which makes it compute-heavy at 2 GiB of memory per vCPU.
Within the same generation and size, the c8g.16xlarge on AWS Graviton4 costs $2.55/hour, 33% less ($905 a month). The other variants are the c8i-flex.16xlarge at $2.85, the c8i.16xlarge at $3.00 and the c8gd.16xlarge at $3.14.
Per vCPU it is one of the dearer compute optimized types: 82% of the 291 current types in the family cost less than its $0.0592 per vCPU-hour. The premium mostly pays for the very fast networking. On demand it is $3.79/hour in US East (N. Virginia), or $2,768 for a 730-hour month.
Running it in Mumbai instead of São Paulo saves $1,487 a month per instance: $3.79/hour against $5.83/hour, a 54% spread.
Looking beyond its own line, 23 of 28 current types with 64 vCPUs and similar memory are cheaper. The cheapest of those is the hpc7g.16xlarge on AWS Graviton3 at $1.68/hour.
It is 5.0% cheaper than the older c7gn.16xlarge on AWS Graviton3, so staying on the previous generation costs more as well as being slower.
It is size 8 of 10 in the c8gn series. Stepping up to the c8gn.24xlarge gives 96 vCPUs and 192 GiB for $1,384 more a month. Dropping to the c8gn.12xlarge saves $692 a month.
Price by region (USD per hour)
| Region | Linux | Windows | 1-yr RI | 3-yr RI | |
|---|---|---|---|---|---|
| N. Virginia us-east-1 | $3.79 | – | – | – | |
| Ohio us-east-2 | $3.79 | – | – | – | |
| Oregon us-west-2 | $3.79 | – | – | – | |
| Canada Central ca-central-1 | $4.14 | – | – | – | |
| São Paulo sa-east-1 | $5.83 | – | – | – | |
| Ireland eu-west-1 | $4.28 | – | – | – | |
| London eu-west-2 | $4.49 | – | – | – | |
| Frankfurt eu-central-1 | $4.32 | – | – | – | |
| Mumbai ap-south-1 | $3.79 | – | – | – | |
| Singapore ap-southeast-1 | $4.35 | – | – | – | |
| Sydney ap-southeast-2 | $4.95 | – | – | – | |
| Tokyo ap-northeast-1 | $4.78 | – | – | – |
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 c8gn.16xlarge |
|---|---|---|---|---|
| hpc7g.16xlarge AWS Graviton3 Processor | 64 | 128 GiB | $1.68 | -56% |
| c6g.16xlarge AWS Graviton2 Processor | 64 | 128 GiB | $2.18 | -43% |
| c7g.16xlarge AWS Graviton3 Processor | 64 | 128 GiB | $2.32 | -39% |
| c6a.16xlarge AMD EPYC 7R13 Processor | 64 | 128 GiB | $2.45 | -35% |
| c6gd.16xlarge AWS Graviton2 Processor | 64 | 128 GiB | $2.46 | -35% |
| c5a.16xlarge AMD EPYC 7R32 | 64 | 128 GiB | $2.46 | -35% |
Cost calculator
Specs
| vCPU | 64 |
|---|---|
| Memory | 128 GiB (2.0 per vCPU) |
| Processor | AWS Graviton4 Processor |
| Clock | 2.8 GHz |
| Storage | EBS only |
| Network | 200 Gigabit |
c8gn sizes
| c8gn.medium | 1 vCPU | $0.0593 |
| c8gn.large | 2 vCPU | $0.1185 |
| c8gn.xlarge | 4 vCPU | $0.2370 |
| c8gn.2xlarge | 8 vCPU | $0.4740 |
| c8gn.4xlarge | 16 vCPU | $0.9480 |
| c8gn.8xlarge | 32 vCPU | $1.90 |
| c8gn.12xlarge | 48 vCPU | $2.84 |
| c8gn.16xlarge | 64 vCPU | $3.79 |
| c8gn.24xlarge | 96 vCPU | $5.69 |
| c8gn.48xlarge | 192 vCPU | $11.38 |