c7i-flex.4xlarge
Compute optimized · c7i-flex series · Intel Xeon Scalable (Sapphire Rapids)
- vCPU
- 16
- Memory
- 32 GiB
- Linux / hour
- $0.6783
- Per month
- $495
- Per vCPU-hour
- $0.0424
- Per GiB-hour
- $0.0212
Analysis
The c7i-flex.4xlarge is a compute optimized instance in the c7i-flex series with 16 vCPUs and 32 GiB of memory on Intel Xeon Scalable (Sapphire Rapids) (up to 3.2 GHz), which makes it compute-heavy at 2 GiB of memory per vCPU.
Within the same generation and size, the c7g.4xlarge on AWS Graviton3 costs $0.5800/hour, 14% less ($71.76 a month), though switching means rebuilding software for arm64. The other variants are the c7i.4xlarge at $0.7140, the c7gd.4xlarge at $0.7258 and the c7a.4xlarge at $0.8211.
At $0.6783/hour on demand in US East (N. Virginia), about $495 a month, the c7i-flex.4xlarge is one of the cheaper ways to buy compute optimized capacity: only 20% of the 291 current compute optimized types cost less per vCPU-hour than its $0.0424.
Running it in Mumbai instead of São Paulo saves $268 a month per instance: $0.6783/hour against $1.05/hour, a 54% spread.
Reserving it for a year with no upfront payment cuts the Linux rate to $0.4487/hour, which beats on demand once it runs more than 66% of the time; three years brings it to $0.2986/hour, 56% below on demand. Windows Server roughly doubles the bill at $1.38/hour, because the licence is charged per vCPU.
The newer c8i-flex.4xlarge on Intel Xeon Scalable (Granite Rapids) is 5.0% dearer at $0.7122/hour.
Price by region (USD per hour)
| Region | Linux | Windows | 1-yr RI | 3-yr RI | |
|---|---|---|---|---|---|
| N. Virginia us-east-1 | $0.6783 | $1.38 | $0.4487 | $0.2986 | |
| Ohio us-east-2 | $0.6783 | $1.38 | $0.4487 | $0.2986 | |
| Oregon us-west-2 | $0.6783 | $1.38 | $0.4487 | $0.2986 | |
| Canada Central ca-central-1 | $0.7421 | $1.44 | $0.4927 | $0.3258 | |
| São Paulo sa-east-1 | $1.05 | $1.74 | $0.6904 | $0.4748 | |
| Ireland eu-west-1 | $0.7278 | $1.43 | $0.4817 | $0.3318 | |
| London eu-west-2 | $0.8060 | $1.51 | $0.5320 | $0.3662 | |
| Frankfurt eu-central-1 | $0.7741 | $1.47 | $0.5103 | $0.3511 | |
| Mumbai ap-south-1 | $0.6783 | $1.38 | $0.4491 | $0.3076 | |
| Singapore ap-southeast-1 | $0.7822 | $1.48 | $0.5192 | $0.3548 | |
| Sydney ap-southeast-2 | $0.8858 | $1.58 | $0.5848 | $0.4024 | |
| Tokyo ap-northeast-1 | $0.8539 | $1.55 | $0.5631 | $0.3891 |
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 c7i-flex.4xlarge |
|---|---|---|---|---|
| c6g.4xlarge AWS Graviton2 Processor | 16 | 32 GiB | $0.5440 | -20% |
| c7g.4xlarge AWS Graviton3 Processor | 16 | 32 GiB | $0.5800 | -14% |
| c6a.4xlarge AMD EPYC 7R13 Processor | 16 | 32 GiB | $0.6120 | -10% |
| c6gd.4xlarge AWS Graviton2 Processor | 16 | 32 GiB | $0.6144 | -9% |
| c5a.4xlarge AMD EPYC 7R32 | 16 | 32 GiB | $0.6160 | -9% |
| c8g.4xlarge AWS Graviton4 Processor | 16 | 32 GiB | $0.6381 | -6% |
Cost calculator
Specs
| vCPU | 16 |
|---|---|
| Memory | 32 GiB (2.0 per vCPU) |
| Processor | Intel Xeon Scalable (Sapphire Rapids) |
| Clock | 3.2 GHz |
| Storage | EBS only |
| Network | Up to 12500 Megabit |
c7i-flex sizes
| c7i-flex.large | 2 vCPU | $0.0848 |
| c7i-flex.xlarge | 4 vCPU | $0.1696 |
| c7i-flex.2xlarge | 8 vCPU | $0.3392 |
| c7i-flex.4xlarge | 16 vCPU | $0.6783 |
| c7i-flex.8xlarge | 32 vCPU | $1.36 |
| c7i-flex.12xlarge | 48 vCPU | $2.03 |
| c7i-flex.16xlarge | 64 vCPU | $2.71 |