r5b.12xlarge
Amazon EC2 R5 instances are the next generation of memory optimized instances for the Amazon Elastic Compute Cloud.
The r5b.12xlarge is a aws ec2 instance type featuring multiple vCPUs and optimized memory, commonly used for ec2 workloads.
Last updated at Tue Apr 28 2026
Instance Info
| Compute | Value |
| vCPUs | 48 |
| Memory | 384 GiB |
| Physical Processor | Intel Xeon Platinum 8259 (Cascade Lake) |
| Clock Speed | 3.1 GHz |
| CPU Architecture | 64-bit |
| GPU Memory | NA |
| Network | Value |
| Network Performance | 10 Gigabit |
| Enhanced Networking | Yes |
| Storage | Value |
| Storage | EBS only |
| EBS Throughput | 30 Gbps |
| Amazon | Value |
| Current Generation | Yes |
| Instance Type | r5b.12xlarge |
| Family | Memory optimized |
Family Instances
| Instance | vCPUs | Memory |
|---|
Related Instances
| Instance | vCPUs | Memory |
|---|---|---|
| i8g.12xlarge | 48 | 384 GiB |
| g6e.12xlarge | 48 | 384 GiB |
| i7i.12xlarge | 48 | 384 GiB |
| i7ie.12xlarge | 48 | 384 GiB |
| i8ge.12xlarge | 48 | 384 GiB |
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