OCI OCPU vs vCPU: Why Oracle Cloud Looks Cheaper — And Why It Actually Is
If you've tried comparing Oracle Cloud Infrastructure (OCI) pricing with AWS, Azure, or GCP, you've encountered the OCPU — and probably been confused by it.
What is an OCPU?
OCPU stands for Oracle Compute Unit. It represents one physical processor core with hyperthreading enabled.
The critical rule: 1 OCPU = 2 vCPUs
When you enable hyperthreading on a physical core, it presents two logical processing threads — which is exactly what AWS, Azure, and GCP call two vCPUs.
OCPU to vCPU Conversion Table
| OCI OCPUs | Equivalent vCPUs (AWS/Azure/GCP) |
|---|---|
| 1 OCPU | 2 vCPU |
| 2 OCPU | 4 vCPU |
| 4 OCPU | 8 vCPU |
| 8 OCPU | 16 vCPU |
| 16 OCPU | 32 vCPU |
| 32 OCPU | 64 vCPU |
Fair Price Comparison: 8 vCPU Equivalent
| Provider | Instance | CPU | RAM | $/Hour | $/Month |
|---|---|---|---|---|---|
| AWS | m5.2xlarge | 8 vCPU | 32 GB | $0.384 | $280 |
| Azure | D8s v5 | 8 vCPU | 32 GB | $0.384 | $280 |
| GCP | n2-standard-8 | 8 vCPU | 32 GB | $0.388 | $283 |
| OCI | E4.Flex 4 OCPU | 4 OCPU = 8 vCPU | 32 GB | $0.128 | $93 |
OCI is 67% cheaper than AWS for equivalent compute power — even after the correct conversion.
OCI Flex Shapes: Even More Flexibility
OCI's Flex shapes let you choose exactly how many OCPUs and how much RAM you need — independently. This means you can create a VM with 2 OCPUs and 48 GB RAM if that's what your workload needs. AWS, Azure, and GCP lock you into fixed CPU-to-RAM ratios.
Is OCI Actually Cheaper?
Yes. Even after correct OCPU→vCPU conversion, OCI consistently costs 60–70% less than AWS and Azure, and 50–60% less than GCP for compute workloads. Combined with OCI's egress pricing ($0.0085/GB vs AWS $0.09/GB), the total savings can be enormous.
TCOIQ automatically handles all OCPU→vCPU conversions in every comparison. You always see accurate apples-to-apples pricing.
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