c8g.16xlarge
Compute optimized · c8g series · AWS Graviton4 Processor
- vCPU
- 64
- Memory
- 128 GiB
- Linux / hour
- $2.55
- Per month
- $1,863
- Per vCPU-hour
- $0.0399
- Per GiB-hour
- $0.0199
Analysis
The c8g.16xlarge is a compute optimized instance in the c8g series with 64 vCPUs and 128 GiB of memory on AWS Graviton4 (up to 2.7 GHz), which makes it compute-heavy at 2 GiB of memory per vCPU.
Running it in Mumbai instead of São Paulo saves $1,593 a month per instance: $1.73/hour against $3.91/hour, a 126% spread.
It is the cheapest of the 5 processor variants AWS sells at this size and generation. The c8a.16xlarge on AMD EPYC 9R45 costs 35% more, and the c8i-flex.16xlarge, the c8i.16xlarge and the c8gd.16xlarge also sit above it.
At $2.55/hour on demand in US East (N. Virginia), about $1,863 a month, the c8g.16xlarge is one of the cheaper ways to buy compute optimized capacity: only 17% of the 291 current compute optimized types cost less per vCPU-hour than its $0.0399.
Compared with the previous generation, it costs 10% more than the c7g.16xlarge on AWS Graviton3 ($170 more a month per instance), in exchange for the newer processor. The newer c9g.16xlarge on AWS Graviton5 is 9.0% dearer at $2.78/hour.
Looking beyond its own line, 6 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.
Price by region (USD per hour)
| Region | Linux | Windows | 1-yr RI | 3-yr RI | |
|---|---|---|---|---|---|
| N. Virginia us-east-1 | $2.55 | – | $1.68 | $1.12 | |
| Ohio us-east-2 | $2.54 | – | $1.68 | $1.12 | |
| Oregon us-west-2 | $2.55 | – | $1.68 | $1.12 | |
| Canada Central ca-central-1 | $2.78 | – | $1.85 | $1.22 | |
| São Paulo sa-east-1 | $3.91 | – | $2.59 | $1.78 | |
| Ireland eu-west-1 | $2.73 | – | $1.81 | $1.24 | |
| London eu-west-2 | $3.02 | – | $2.00 | $1.37 | |
| Frankfurt eu-central-1 | $2.90 | – | $1.91 | $1.32 | |
| Mumbai ap-south-1 | $1.73 | – | $1.14 | $0.7835 | |
| Singapore ap-southeast-1 | $2.93 | – | $1.95 | $1.33 | |
| Sydney ap-southeast-2 | $3.32 | – | $2.19 | $1.51 | |
| Tokyo ap-northeast-1 | $3.20 | – | $2.11 | $1.46 |
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 c8g.16xlarge |
|---|---|---|---|---|
| hpc7g.16xlarge AWS Graviton3 Processor | 64 | 128 GiB | $1.68 | -34% |
| c6g.16xlarge AWS Graviton2 Processor | 64 | 128 GiB | $2.18 | -15% |
| c7g.16xlarge AWS Graviton3 Processor | 64 | 128 GiB | $2.32 | -9% |
| c6a.16xlarge AMD EPYC 7R13 Processor | 64 | 128 GiB | $2.45 | -4% |
| c6gd.16xlarge AWS Graviton2 Processor | 64 | 128 GiB | $2.46 | -4% |
| c5a.16xlarge AMD EPYC 7R32 | 64 | 128 GiB | $2.46 | -3% |
Cost calculator
Specs
| vCPU | 64 |
|---|---|
| Memory | 128 GiB (2.0 per vCPU) |
| Processor | AWS Graviton4 Processor |
| Clock | 2.7 GHz |
| Storage | EBS only |
| Network | 30 Gigabit |
c8g sizes
| c8g.medium | 1 vCPU | $0.0399 |
| c8g.large | 2 vCPU | $0.0798 |
| c8g.xlarge | 4 vCPU | $0.1595 |
| c8g.2xlarge | 8 vCPU | $0.3190 |
| c8g.4xlarge | 16 vCPU | $0.6381 |
| c8g.8xlarge | 32 vCPU | $1.28 |
| c8g.12xlarge | 48 vCPU | $1.91 |
| c8g.16xlarge | 64 vCPU | $2.55 |
| c8g.24xlarge | 96 vCPU | $3.83 |
| c8g.48xlarge | 192 vCPU | $7.66 |