Specifications for Amazon EC2 memory optimized instances
End of sale notice
The U-9tb1, U-12tb1, U-18tb1, and U-24tb1 instance types are no longer available for new instance launches. If your workload requires a high-memory instance, we recommend that you use a U7i instance type instead.
Memory optimized instances are designed to deliver fast performance for workloads that process large data sets in memory.
For information on previous generation instance types of this category, such as R4 instances, see Specifications for Amazon EC2 previous generation instances.
Contents
Pricing
For pricing information, see Amazon EC2 On-Demand Pricing
Instance families and instance types
| Instance family | Available instance types |
|---|---|
| R5 | r5.large | r5.xlarge | r5.2xlarge | r5.4xlarge | r5.8xlarge | r5.12xlarge | r5.16xlarge | r5.24xlarge | r5.metal |
| R5a | r5a.large | r5a.xlarge | r5a.2xlarge | r5a.4xlarge | r5a.8xlarge | r5a.12xlarge | r5a.16xlarge | r5a.24xlarge |
| R5ad | r5ad.large | r5ad.xlarge | r5ad.2xlarge | r5ad.4xlarge | r5ad.8xlarge | r5ad.12xlarge | r5ad.16xlarge | r5ad.24xlarge |
| R5b | r5b.large | r5b.xlarge | r5b.2xlarge | r5b.4xlarge | r5b.8xlarge | r5b.12xlarge | r5b.16xlarge | r5b.24xlarge | r5b.metal |
| R5d | r5d.large | r5d.xlarge | r5d.2xlarge | r5d.4xlarge | r5d.8xlarge | r5d.12xlarge | r5d.16xlarge | r5d.24xlarge | r5d.metal |
| R5dn | r5dn.large | r5dn.xlarge | r5dn.2xlarge | r5dn.4xlarge | r5dn.8xlarge | r5dn.12xlarge | r5dn.16xlarge | r5dn.24xlarge | r5dn.metal |
| R5n | r5n.large | r5n.xlarge | r5n.2xlarge | r5n.4xlarge | r5n.8xlarge | r5n.12xlarge | r5n.16xlarge | r5n.24xlarge | r5n.metal |
| R6a | r6a.large | r6a.xlarge | r6a.2xlarge | r6a.4xlarge | r6a.8xlarge | r6a.12xlarge | r6a.16xlarge | r6a.24xlarge | r6a.32xlarge | r6a.48xlarge | r6a.metal |
| R6g | r6g.medium | r6g.large | r6g.xlarge | r6g.2xlarge | r6g.4xlarge | r6g.8xlarge | r6g.12xlarge | r6g.16xlarge | r6g.metal |
| R6gd | r6gd.medium | r6gd.large | r6gd.xlarge | r6gd.2xlarge | r6gd.4xlarge | r6gd.8xlarge | r6gd.12xlarge | r6gd.16xlarge | r6gd.metal |
| R6i | r6i.large | r6i.xlarge | r6i.2xlarge | r6i.4xlarge | r6i.8xlarge | r6i.12xlarge | r6i.16xlarge | r6i.24xlarge | r6i.32xlarge | r6i.metal |
| R6id | r6id.large | r6id.xlarge | r6id.2xlarge | r6id.4xlarge | r6id.8xlarge | r6id.12xlarge | r6id.16xlarge | r6id.24xlarge | r6id.32xlarge | r6id.metal |
| R6idn | r6idn.large | r6idn.xlarge | r6idn.2xlarge | r6idn.4xlarge | r6idn.8xlarge | r6idn.12xlarge | r6idn.16xlarge | r6idn.24xlarge | r6idn.32xlarge | r6idn.metal |
| R6in | r6in.large | r6in.xlarge | r6in.2xlarge | r6in.4xlarge | r6in.8xlarge | r6in.12xlarge | r6in.16xlarge | r6in.24xlarge | r6in.32xlarge | r6in.metal |
| R7a | r7a.medium | r7a.large | r7a.xlarge | r7a.2xlarge | r7a.4xlarge | r7a.8xlarge | r7a.12xlarge | r7a.16xlarge | r7a.24xlarge | r7a.32xlarge | r7a.48xlarge | r7a.metal-48xl |
| R7g | r7g.medium | r7g.large | r7g.xlarge | r7g.2xlarge | r7g.4xlarge | r7g.8xlarge | r7g.12xlarge | r7g.16xlarge | r7g.metal |
| R7gd | r7gd.medium | r7gd.large | r7gd.xlarge | r7gd.2xlarge | r7gd.4xlarge | r7gd.8xlarge | r7gd.12xlarge | r7gd.16xlarge | r7gd.metal |
| R7i | r7i.large | r7i.xlarge | r7i.2xlarge | r7i.4xlarge | r7i.8xlarge | r7i.12xlarge | r7i.16xlarge | r7i.24xlarge | r7i.48xlarge | r7i.metal-24xl | r7i.metal-48xl |
| R7iz | r7iz.large | r7iz.xlarge | r7iz.2xlarge | r7iz.4xlarge | r7iz.8xlarge | r7iz.12xlarge | r7iz.16xlarge | r7iz.32xlarge | r7iz.metal-16xl | r7iz.metal-32xl |
| R8a | r8a.medium | r8a.large | r8a.xlarge | r8a.2xlarge | r8a.4xlarge | r8a.8xlarge | r8a.12xlarge | r8a.16xlarge | r8a.24xlarge | r8a.48xlarge | r8a.metal-24xl | r8a.metal-48xl |
| R8g | r8g.medium | r8g.large | r8g.xlarge | r8g.2xlarge | r8g.4xlarge | r8g.8xlarge | r8g.12xlarge | r8g.16xlarge | r8g.24xlarge | r8g.48xlarge | r8g.metal-24xl | r8g.metal-48xl |
| R8gb | r8gb.medium | r8gb.large | r8gb.xlarge | r8gb.2xlarge | r8gb.4xlarge | r8gb.8xlarge | r8gb.12xlarge | r8gb.16xlarge | r8gb.24xlarge | r8gb.48xlarge | r8gb.metal-24xl | r8gb.metal-48xl |
| R8gd | r8gd.medium | r8gd.large | r8gd.xlarge | r8gd.2xlarge | r8gd.4xlarge | r8gd.8xlarge | r8gd.12xlarge | r8gd.16xlarge | r8gd.24xlarge | r8gd.48xlarge | r8gd.metal-24xl | r8gd.metal-48xl |
| R8gn | r8gn.medium | r8gn.large | r8gn.xlarge | r8gn.2xlarge | r8gn.4xlarge | r8gn.8xlarge | r8gn.12xlarge | r8gn.16xlarge | r8gn.24xlarge | r8gn.48xlarge | r8gn.metal-24xl | r8gn.metal-48xl |
| R8i | r8i.large | r8i.xlarge | r8i.2xlarge | r8i.4xlarge | r8i.8xlarge | r8i.12xlarge | r8i.16xlarge | r8i.24xlarge | r8i.32xlarge | r8i.48xlarge | r8i.96xlarge | r8i.metal-48xl | r8i.metal-96xl |
| R8id | r8id.large | r8id.xlarge | r8id.2xlarge | r8id.4xlarge | r8id.8xlarge | r8id.12xlarge | r8id.16xlarge | r8id.24xlarge | r8id.32xlarge | r8id.48xlarge | r8id.96xlarge | r8id.metal-48xl | r8id.metal-96xl |
| R8i-flex | r8i-flex.large | r8i-flex.xlarge | r8i-flex.2xlarge | r8i-flex.4xlarge | r8i-flex.8xlarge | r8i-flex.12xlarge | r8i-flex.16xlarge |
| R8in | r8in.large | r8in.xlarge | r8in.2xlarge | r8in.4xlarge | r8in.8xlarge | r8in.12xlarge | r8in.16xlarge | r8in.24xlarge | r8in.32xlarge | r8in.48xlarge | r8in.96xlarge | r8in.metal-48xl | r8in.metal-96xl |
| R8idn | r8idn.large | r8idn.xlarge | r8idn.2xlarge | r8idn.4xlarge | r8idn.8xlarge | r8idn.12xlarge | r8idn.16xlarge | r8idn.24xlarge | r8idn.32xlarge | r8idn.48xlarge | r8idn.96xlarge | r8idn.metal-48xl | r8idn.metal-96xl |
| R8ib | r8ib.large | r8ib.xlarge | r8ib.2xlarge | r8ib.4xlarge | r8ib.8xlarge | r8ib.12xlarge | r8ib.16xlarge | r8ib.24xlarge | r8ib.32xlarge | r8ib.48xlarge | r8ib.96xlarge | r8ib.metal-48xl | r8ib.metal-96xl |
| R8idb | r8idb.large | r8idb.xlarge | r8idb.2xlarge | r8idb.4xlarge | r8idb.8xlarge | r8idb.12xlarge | r8idb.16xlarge | r8idb.24xlarge | r8idb.32xlarge | r8idb.48xlarge | r8idb.96xlarge | r8idb.metal-48xl | r8idb.metal-96xl |
| R9g | r9g.medium | r9g.large | r9g.xlarge | r9g.2xlarge | r9g.4xlarge | r9g.8xlarge | r9g.12xlarge | r9g.16xlarge | r9g.24xlarge | r9g.48xlarge | r9g.metal-48xl |
| R9gd | r9gd.medium | r9gd.large | r9gd.xlarge | r9gd.2xlarge | r9gd.4xlarge | r9gd.8xlarge | r9gd.12xlarge | r9gd.16xlarge | r9gd.24xlarge | r9gd.48xlarge | r9gd.metal-48xl |
| U-3tb1 | u-3tb1.56xlarge |
| U-6tb1 | u-6tb1.56xlarge | u-6tb1.112xlarge | u-6tb1.metal |
| U-9tb1 | u-9tb1.112xlarge | u-9tb1.metal |
| U-12tb1 | u-12tb1.112xlarge | u-12tb1.metal |
| U-18tb1 | u-18tb1.112xlarge | u-18tb1.metal |
| U-24tb1 | u-24tb1.112xlarge | u-24tb1.metal |
| U7i-6tb | u7i-6tb.112xlarge |
| U7i-8tb | u7i-8tb.112xlarge |
| U7i-12tb | u7i-12tb.224xlarge |
| U7in-16tb | u7in-16tb.224xlarge |
| U7in-24tb | u7in-24tb.224xlarge |
| U7in-32tb | u7in-32tb.224xlarge |
| U7inh-32tb | u7inh-32tb.480xlarge |
| X1 | x1.16xlarge | x1.32xlarge |
| X1e | x1e.xlarge | x1e.2xlarge | x1e.4xlarge | x1e.8xlarge | x1e.16xlarge | x1e.32xlarge |
| X2gd | x2gd.medium | x2gd.large | x2gd.xlarge | x2gd.2xlarge | x2gd.4xlarge | x2gd.8xlarge | x2gd.12xlarge | x2gd.16xlarge | x2gd.metal |
| X2idn | x2idn.16xlarge | x2idn.24xlarge | x2idn.32xlarge | x2idn.metal |
| X2iedn | x2iedn.xlarge | x2iedn.2xlarge | x2iedn.4xlarge | x2iedn.8xlarge | x2iedn.16xlarge | x2iedn.24xlarge | x2iedn.32xlarge | x2iedn.metal |
| X2iezn | x2iezn.2xlarge | x2iezn.4xlarge | x2iezn.6xlarge | x2iezn.8xlarge | x2iezn.12xlarge | x2iezn.metal |
| X8g | x8g.medium | x8g.large | x8g.xlarge | x8g.2xlarge | x8g.4xlarge | x8g.8xlarge | x8g.12xlarge | x8g.16xlarge | x8g.24xlarge | x8g.48xlarge | x8g.metal-24xl | x8g.metal-48xl |
| X8aedz | x8aedz.large | x8aedz.xlarge | x8aedz.3xlarge | x8aedz.6xlarge | x8aedz.12xlarge | x8aedz.24xlarge | x8aedz.metal-12xl | x8aedz.metal-24xl |
| X8i | x8i.large | x8i.xlarge | x8i.2xlarge | x8i.4xlarge | x8i.8xlarge | x8i.12xlarge | x8i.16xlarge | x8i.24xlarge | x8i.32xlarge | x8i.48xlarge | x8i.64xlarge | x8i.96xlarge | x8i.metal-48xl | x8i.metal-96xl |
| z1d | z1d.large | z1d.xlarge | z1d.2xlarge | z1d.3xlarge | z1d.6xlarge | z1d.12xlarge | z1d.metal |
Instance family summary
| Instance family | Hypervisor | Processor type (architecture) | Metal instances available | Dedicated Hosts support | Spot support | Hibernation support | Supported operating systems |
|---|---|---|---|---|---|---|---|
| R5 | Nitro v2 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Windows | Linux |
| R5a | Nitro v2 | AMD (x86_64) | ✗ No | ✗ No | ✓ Yes | ✓ Yes | Windows | Linux |
| R5ad | Nitro v2 | AMD (x86_64) | ✗ No | ✗ No | ✓ Yes | ✓ Yes | Windows | Linux |
| R5b | Nitro v2 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✗ No | Windows | Linux |
| R5d | Nitro v2 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Windows | Linux |
| R5dn | Nitro v3 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✗ No | Windows | Linux |
| R5n | Nitro v3 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✗ No | Windows | Linux |
| R6a | Nitro v4 | AMD (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Windows | Linux |
| R6g | Nitro v2 | AWS Graviton (arm64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Linux |
| R6gd | Nitro v2 | AWS Graviton (arm64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Linux |
| R6i | Nitro v4 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✗ No | Windows | Linux |
| R6id | Nitro v4 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✗ No | Windows | Linux |
| R6idn | Nitro v4 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Windows | Linux |
| R6in | Nitro v4 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Windows | Linux |
| R7a | Nitro v4 | AMD (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Windows | Linux |
| R7g | Nitro v4 | AWS Graviton (arm64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Linux |
| R7gd | Nitro v4 | AWS Graviton (arm64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Linux |
| R7i | Nitro v4 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Windows | Linux |
| R7iz | Nitro v4 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Windows | Linux |
| R8a | Nitro v6 | AMD (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Windows | Linux |
| R8g | Nitro v5 | AWS Graviton (arm64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Linux |
| R8gb | Nitro v6 | AWS Graviton (arm64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Linux |
| R8gd | Nitro v5 | AWS Graviton (arm64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Linux |
| R8gn | Nitro v6 | AWS Graviton (arm64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Linux |
| R8i | Nitro v6 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Windows | Linux |
| R8id | Nitro v6 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✗ No | Windows | Linux |
| R8i-flex | Nitro v6 | Intel (x86_64) | ✗ No | ✗ No | ✓ Yes | ✓ Yes | Windows | Linux |
| R8in | Nitro v6 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Windows | Linux |
| R8idn | Nitro v6 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Windows | Linux |
| R8ib | Nitro v6 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Windows | Linux |
| R8idb | Nitro v6 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Windows | Linux |
| R9g | Nitro v6 | AWS Graviton (arm64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Linux |
| R9gd | Nitro v6 | AWS Graviton (arm64) | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | Linux |
| U-3tb1 | Nitro v3 | Intel (x86_64) | ✗ No | ✗ No | ✗ No | ✗ No | Windows | Linux |
| U-6tb1 | Nitro v3 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✗ No | ✗ No | Windows | Linux |
| U-9tb1 | Nitro v3 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✗ No | ✗ No | Windows | Linux |
| U-12tb1 | Nitro v3 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✗ No | ✗ No | Windows | Linux |
| U-18tb1 | Nitro v3 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✗ No | ✗ No | Windows | Linux |
| U-24tb1 | Nitro v3 | Intel (x86_64) | ✓ Yes | ✓ Yes | ✗ No | ✗ No | Windows | Linux |
| U7i-6tb | Nitro v4 | Intel (x86_64) | ✗ No | ✓ Yes | ✗ No | ✗ No | Windows | Linux |
| U7i-8tb | Nitro v4 | Intel (x86_64) | ✗ No | ✓ Yes | ✗ No | ✗ No | Windows | Linux |
| U7i-12tb | Nitro v4 | Intel (x86_64) | ✗ No | ✓ Yes | ✗ No | ✗ No | Windows | Linux |
| U7in-16tb | Nitro v4 | Intel (x86_64) | ✗ No | ✓ Yes | ✗ No | ✗ No | Windows | Linux |