c8i.16xlarge
Compute optimized · c8i series · Intel Xeon Scalable (Granite Rapids)
- vCPU
- 64
- Memory
- 128 GiB
- Linux / hour
- $3.00
- Per month
- $2,189
- Per vCPU-hour
- $0.0469
- Per GiB-hour
- $0.0234
Analysis
The c8i.16xlarge is a compute optimized instance in the c8i series with 64 vCPUs and 128 GiB of memory on Intel Xeon Scalable (Granite Rapids) (up to 3.9 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, 15% less ($326 a month), though switching means rebuilding software for arm64. The other variants are the c8i-flex.16xlarge at $2.85, the c8gd.16xlarge at $3.14 and the c8a.16xlarge at $3.45.
Running it in Mumbai instead of São Paulo saves $1,185 a month per instance: $3.00/hour against $4.62/hour, a 54% spread.
Windows Server roughly doubles the bill at $5.94/hour, because the licence is charged per vCPU.
On demand it costs $3.00/hour in US East (N. Virginia), $2,189 a month if left running, which puts it mid-table for compute optimized types at the 47th percentile per vCPU ($0.0469 per vCPU-hour) and the 50th percentile per GiB ($0.0234 per GiB-hour).
Looking beyond its own line, 15 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.
Compared with the previous generation, it costs 5.0% more than the c7i.16xlarge on Intel Xeon Scalable (Sapphire Rapids) ($104 more a month per instance), in exchange for the newer processor.
Price by region (USD per hour)
| Region | Linux | Windows | 1-yr RI | 3-yr RI | |
|---|---|---|---|---|---|
| N. Virginia us-east-1 | $3.00 | $5.94 | – | – | |
| Ohio us-east-2 | $3.00 | $5.94 | – | – | |
| Oregon us-west-2 | $3.00 | $5.94 | – | – | |
| Canada Central ca-central-1 | $3.28 | $6.22 | – | – | |
| São Paulo sa-east-1 | $4.62 | $7.57 | – | – | |
| Ireland eu-west-1 | $3.22 | $6.16 | – | – | |
| London eu-west-2 | $3.56 | $6.51 | – | – | |
| Frankfurt eu-central-1 | $3.42 | $6.37 | – | – | |
| Mumbai ap-south-1 | $3.00 | $5.94 | – | – | |
| Singapore ap-southeast-1 | $3.46 | $6.40 | – | – | |
| Sydney ap-southeast-2 | $3.92 | $6.86 | – | – | |
| Tokyo ap-northeast-1 | $3.78 | $6.72 | – | – |
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 c8i.16xlarge |
|---|---|---|---|---|
| hpc7g.16xlarge AWS Graviton3 Processor | 64 | 128 GiB | $1.68 | -44% |
| c6g.16xlarge AWS Graviton2 Processor | 64 | 128 GiB | $2.18 | -27% |
| c7g.16xlarge AWS Graviton3 Processor | 64 | 128 GiB | $2.32 | -23% |
| c6a.16xlarge AMD EPYC 7R13 Processor | 64 | 128 GiB | $2.45 | -18% |
| c6gd.16xlarge AWS Graviton2 Processor | 64 | 128 GiB | $2.46 | -18% |
| c5a.16xlarge AMD EPYC 7R32 | 64 | 128 GiB | $2.46 | -18% |
Cost calculator
Specs
| vCPU | 64 |
|---|---|
| Memory | 128 GiB (2.0 per vCPU) |
| Processor | Intel Xeon Scalable (Granite Rapids) |
| Clock | 3.9 GHz |
| Storage | EBS only |
| Network | 30000 Megabit |
c8i sizes
| c8i.large | 2 vCPU | $0.0937 |
| c8i.xlarge | 4 vCPU | $0.1874 |
| c8i.2xlarge | 8 vCPU | $0.3748 |
| c8i.4xlarge | 16 vCPU | $0.7497 |
| c8i.8xlarge | 32 vCPU | $1.50 |
| c8i.12xlarge | 48 vCPU | $2.25 |
| c8i.16xlarge | 64 vCPU | $3.00 |
| c8i.24xlarge | 96 vCPU | $4.50 |
| c8i.32xlarge | 128 vCPU | $6.00 |
| c8i.48xlarge | 192 vCPU | $9.00 |
| c8i.96xlarge | 384 vCPU | $17.99 |