Hardware specifications for DB instance classes
In the tables in this section, you can find hardware details about the Amazon RDS DB instance classes.
For information about Amazon RDS DB engine support for each DB instance class, see Supported DB engines for DB instance classes.
Topics
Note
RDS for SQL Server supports Optimize CPU starting with 7th generation instance classes (such as db.m7i and db.r7i). The vCPU counts documented below may differ for these instance classes. For accurate vCPU counts, refer to DB instance classes that support Optimize CPU.
Hardware terminology for DB instance classes
The following terminology is used to describe hardware specifications for DB instance classes:
- vCPU
-
The number of virtual central processing units (CPUs). A virtual CPU is a unit of capacity that you can use to compare DB instance classes. Instead of purchasing or leasing a particular processor to use for several months or years, you are renting capacity by the hour. Our goal is to make a consistent and specific amount of CPU capacity available, within the limits of the actual underlying hardware.
- ECU
-
The relative measure of the integer processing power of an Amazon EC2 instance. To make it easy for developers to compare CPU capacity between different instance classes, we have defined an Amazon EC2 Compute Unit. The amount of CPU that is allocated to a particular instance is expressed in terms of these EC2 Compute Units. One ECU currently provides CPU capacity equivalent to a 1.0–1.2 GHz 2007 Opteron or 2007 Xeon processor.
- Memory (GiB)
-
The RAM, in gibibytes, allocated to the DB instance. There is often a consistent ratio between memory and vCPU. As an example, take the db.r4 instance class, which has a memory to vCPU ratio similar to the db.r5 instance class. However, for most use cases the db.r5 instance class provides better, more consistent performance than the db.r4 instance class.
- EBS-optimized
-
The DB instance uses an optimized configuration stack and provides additional, dedicated capacity for I/O. This optimization provides the best performance by minimizing contention between I/O and other traffic from your instance. For more information about Amazon EBS–optimized instances, see Amazon EBS–Optimized instances in the Amazon EC2 User Guide.
EBS-optimized instances have a baseline and maximum IOPS rate. The maximum IOPS rate is enforced at the DB instance level. A set of EBS volumes that combine to have an IOPS rate that is higher than the maximum can't exceed the instance-level threshold. For example, if the maximum IOPS for a particular DB instance class is 40,000, and you attach four 64,000 IOPS EBS volumes, the maximum IOPS is 40,000 rather than 256,000. For the IOPS maximum specific to each EC2 instance type, see Supported instance types in the Amazon EC2 User Guide for Linux Instances.
- Max. EBS bandwidth (Mbps)
-
The maximum EBS bandwidth in megabits per second. Divide by 8 to get the expected throughput in megabytes per second.
Important
General Purpose SSD (gp2) volumes for Amazon RDS DB instances have a throughput limit of 250 MiB/s in most cases. However, the throughput limit can vary depending on volume size. For more information, see Amazon EBS volume types in the Amazon EC2 User Guide.
- Network bandwidth
-
The network speed relative to other DB instance classes.
Hardware specifications for the general-purpose instance classes
The following tables show the compute, memory, storage, and bandwidth specifications for the general-purpose instance classes.
db.m9g – general-purpose instance classes powered by AWS Graviton5 processors
| Instance class | vCPU | ECU | Memory (GiB) | Instance storage (GiB) | Max. EBS bandwidth (Mbps) | Network bandwidth (Gbps) |
|---|---|---|---|---|---|---|
| db.m9g.48xlarge | 192 | — | 768 | EBS-optimized only | 72,000 | 100 |
| db.m9g.24xlarge | 96 | — | 384 | EBS-optimized only | 36,000 | 50 |
| db.m9g.16xlarge | 64 | — | 256 | EBS-optimized only | 24,000 | 34 |
| db.m9g.12xlarge | 48 | — | 192 | EBS-optimized only | 18,000 | 25 |
| db.m9g.8xlarge | 32 | — | 128 | EBS-optimized only | 12,000 | 17 |
| db.m9g.4xlarge* | 16 | — | 64 | EBS-optimized only | Up to 12,000 | Up to 17 |
| db.m9g.2xlarge* | 8 | — | 32 | EBS-optimized only | Up to 12,000 | Up to 17 |
| db.m9g.xlarge* | 4 | — | 16 | EBS-optimized only | Up to 12,000 | Up to 15 |
| db.m9g.large* | 2 | — | 8 | EBS-optimized only | Up to 12,000 | Up to 15 |
db.m8g – general-purpose instance classes powered by AWS Graviton4 processors
| Instance class | vCPU | ECU | Memory (GiB) | Instance storage (GiB) | Max. EBS bandwidth (Mbps) | Network bandwidth (Gbps) |
|---|---|---|---|---|---|---|
| db.m8g.48xlarge | 192 | — | 768 | EBS-optimized only | 40,000 | 50 |
| db.m8g.24xlarge | 96 | — | 384 | EBS-optimized only | 30,000 | 40 |
| db.m8g.16xlarge | 64 | — | 256 | EBS-optimized only | 20,000 | 30 |
| db.m8g.12xlarge | 48 | — | 192 | EBS-optimized only | 15,000 | 22.5 |
| db.m8g.8xlarge | 32 | — | 128 | EBS-optimized only | 10,000 | 15 |
| db.m8g.4xlarge* | 16 | — | 64 | EBS-optimized only | Up to 10,000 | Up to 15 |
| db.m8g.2xlarge* | 8 | — | 32 | EBS-optimized only | Up to 10,000 | Up to 15 |
| db.m8g.xlarge* | 4 | — | 16 | EBS-optimized only | Up to 10,000 | Up to 12.5 |
| db.m8g.large* | 2 | — | 8 | EBS-optimized only | Up to 10,000 | Up to 12.5 |
db.m8i – general-purpose instance classes powered by Intel Xeon 6 processors
| Instance class | vCPU | Processor cores | Sockets | ECU | Memory (GiB) | Instance storage (GiB) | Max. EBS bandwidth (Mbps) | Network bandwidth (Gbps) |
|---|---|---|---|---|---|---|---|---|
| db.m8i.metal-96xl | 384 | 192 | 2 | — | 1,536 | EBS only | 80,000 | 100 |
| db.m8i.metal-48xl | 192 | 96 | 1 | — | 768 | EBS only | 60,000 | 75 |
| db.m8i.96xlarge | 384 | — | — | — | 1,536 | EBS only | 80,000 | 100 |
| db.m8i.48xlarge | 192 | — | — | — | 768 | EBS only | 60,000 | 75 |
| db.m8i.32xlarge | 128 | — | — | — | 512 | EBS only | 40,000 | 50 |
| db.m8i.24xlarge | 96 | — | — | — | 384 | EBS only | 30,000 | 40 |
| db.m8i.16xlarge | 64 | — | — | — | 256 | EBS only | 20,000 | 30 |
| db.m8i.12xlarge | 48 | — | — | — | 192 | EBS only | 15,000 | 22.5 |
| db.m8i.8xlarge | 32 | — | — | — | 128 | EBS only | 10,000 | 15 |
| db.m8i.4xlarge | 16 | — | — | — | 64 | EBS only | Up to 10,000 | Up to 15 |
| db.m8i.2xlarge | 8 | — | — | — | 32 | EBS only | Up to 10,000 | Up to 15 |
| db.m8i.xlarge | 4 | — | — | — | 16 | EBS only | Up to 10,000 | Up to 12.5 |
| db.m8i.large | 2 | — | — | — | 8 | EBS only | Up to 10,000 | Up to 12.5 |
db.m7i – general-purpose instance classes powered by 4th generation Intel Xeon Scalable processors
| Instance class | vCPU | Processor cores | Sockets | ECU | Memory (GiB) | Instance storage (GiB) | Max. EBS bandwidth (Mbps) | Network bandwidth (Gbps) |
|---|---|---|---|---|---|---|---|---|
| db.m7i.metal-48xl | 192 | 96 | 2 | — | 768 | EBS-optimized only | 40,000 | 50 |
| db.m7i.metal-24xl | 96 | 48 | 1 | — | 384 | EBS-optimized only | 30,000 | 37.5 |
| db.m7i.48xlarge | 192 | — | — | — | 768 | EBS-optimized only | 40,000 | 50 |
| db.m7i.24xlarge | 96 | — | — | — | 384 | EBS-optimized only | 30,000 | 37.5 |
| db.m7i.16xlarge | 64 | — | — | — | 256 | EBS-optimized only | 20,000 | 25 |
| db.m7i.12xlarge | 48 | — | — | — | 192 | EBS-optimized only | 15,000 | 18.75 |
| db.m7i.8xlarge | 32 | — | — | — | 128 | EBS-optimized only | 10,000 | 12.5 |
| db.m7i.4xlarge | 16 | — | — | — | 64 | EBS-optimized only | Up to 10,000 | Up to 12.5 |
| db.m7i.2xlarge | 8 | — | — | — | 32 | EBS-optimized only | Up to 10,000 | Up to 12.5 |
| db.m7i.xlarge | 4 | — | — | — | 16 | EBS-optimized only | Up to 10,000 | Up to 12.5 |
| db.m7i.large | 2 | — | — | — | 8 | EBS-optimized only | Up to 10,000 | Up to 12.5 |
db.m7g – general-purpose instance classes powered by AWS Graviton3 processors
| Instance class | vCPU | ECU | Memory (GiB) | Instance storage (GiB) | Max. EBS bandwidth (Mbps) | Network bandwidth (Gbps) |
|---|---|---|---|---|---|---|
| db.m7g.16xlarge | 64 | — | 256 | EBS-optimized only | 20,000 | 30 |
| db.m7g.12xlarge | 48 | — | 192 | EBS-optimized only | 15,000 | 22.5 |
| db.m7g.8xlarge | 32 | — | 128 | EBS-optimized only | 10,000 | 15 |
| db.m7g.4xlarge | 16 | — | 64 | EBS-optimized only | Up to 10,000 | Up to 15 |
| db.m7g.2xlarge* | 8 | — | 32 | EBS-optimized only | Up to 10,000 | Up to 15 |
| db.m7g.xlarge* | 4 | — | 16 | EBS-optimized only | Up to 10,000 | Up to 12.5 |
| db.m7g.large* | 2 | — | 8 | EBS-optimized only | Up to 10,000 | Up to 12.5 |
db.m6g – general-purpose instance classes powered by AWS Graviton2 processors
| Instance class | vCPU | ECU | Memory (GiB) | Instance storage (GiB) | Max. EBS bandwidth (Mbps) | Network bandwidth (Gbps) |
|---|---|---|---|---|---|---|
| db.m6g.16xlarge | 64 | — | 256 | EBS-optimized only | 19,000 | 25 |
| db.m6g.12xlarge | 48 | — | 192 | EBS-optimized only | 14,250 | 20 |
| db.m6g.8xlarge | 32 | — | 128 | EBS-optimized only | 9,500 | 12 |
| db.m6g.4xlarge | 16 | — | 64 | EBS-optimized only | 4,750 | Up to 10 |
| db.m6g.2xlarge* | 8 | — | 32 | EBS-optimized only | Up to 4,750 | Up to 10 |
| db.m6g.xlarge* | 4 | — | 16 | EBS-optimized only | Up to 4,750 | Up to 10 |
| db.m6g.large* | 2 | — | 8 | EBS-optimized only | Up to 4,750 | Up to 10 |
db.m6gd – general-purpose instance classes powered by AWS Graviton2 processors and SSD storage
| Instance class | vCPU | ECU | Memory (GiB) | Instance storage (GiB) | Max. EBS bandwidth (Mbps) | Network bandwidth (Gbps) |
|---|---|---|---|---|---|---|
| db.m6gd.16xlarge | 64 | — | 256 | 2 x 1900 NVMe SSD | 19,000 | 25 |
| db.m6gd.12xlarge | 48 | — | 192 | 2 x 1425 NVMe SSD | 14,250 | 20 |
| db.m6gd.8xlarge | 32 | — | 128 | 1 x 1900 NVMe SSD | 9,500 | 12 |
| db.m6gd.4xlarge* | 16 | — | 64 | 1 x 950 NVMe SSD | 4,750 | Up to 10 |
| db.m6gd.2xlarge* | 8 | — | 32 | 1 x 474 NVMe SSD | Up to 4,750 | Up to 10 |
| db.m6gd.xlarge* | 4 | — | 16 | 1 x 237 NVMe SSD | Up to 4,750 | Up to 10 |
| db.m6gd.large* | 2 | — | 8 | 1 x 118 NVMe SSD | Up to 4,750 | Up to 10 |
db.m6id – general-purpose instance classes powered by 3rd generation Intel Xeon Scalable processors and SSD storage
| Instance class | vCPU | Physical cores | Sockets | ECU | Memory (GiB) | Instance storage (GiB) | Max. EBS bandwidth (Mbps) | Network bandwidth (Gbps) |
|---|---|---|---|---|---|---|---|---|
| db.m6id.metal | 128 | 64 | 2 | — | 512 | 4 x 1900 NVMe SSD | 40,000 | 50 |
| db.m6id.32xlarge | 128 | — | — | — | 512 | 4 x 1900 NVMe SSD | 40,000 | 50 |
| db.m6id.24xlarge | 96 | — | — | — | 384 | 4 x 1425 NVMe SSD | 30,000 | 37.5 |
| db.m6id.16xlarge | 64 | — | — | — | 256 | 2 x 1900 NVMe SSD | 20,000 | 25 |
| db.m6id.12xlarge | 48 | — | — | — | 192 | 2 x 1425 NVMe SSD | 15,000 | 18.75 |
| db.m6id.8xlarge | 32 | — | — | — | 128 | 1 x 1900 NVMe SSD | 10,000 | 12.5 |
| db.m6id.4xlarge* | 16 | — | — | — | 64 | 1 x 950 NVMe SSD | Up to 10,000 | Up to 12.5 |
| db.m6id.2xlarge* | 8 | — | — | — | 32 | 1 x 474 NVMe SSD | Up to 10,000 | Up to 12.5 |
| db.m6id.xlarge* | 4 | — | — | — | 16 | 1 x 237 NVMe SSD | Up to 10,000 | Up to 12.5 |
| db.m6id.large* | 2 | — | — | — | 8 | 1 x 118 NVMe SSD | Up to 10,000 | Up to 12.5 |
db.m6idn – general-purpose instance classes with 3rd Generation Intel Xeon Scalable processors, SSD storage, and network optimization
| Instance class | vCPU | ECU | Memory (GiB) | Instance storage (GiB) | Max. EBS bandwidth (Mbps) | Network bandwidth (Gbps) |
|---|---|---|---|---|---|---|
| db.m6idn.32xlarge | 128 | — | 512 | 4 x 1900 NVMe SSD | 100,000 | 200 |
| db.m6idn.24xlarge | 96 | — | 384 | 4 x 1425 NVMe SSD | 75,000 | 150 |
| db.m6idn.16xlarge | 64 | — | 256 | 2 x 1900 NVMe SSD | 50,000 | 100 |
| db.m6idn.12xlarge | 48 | — | 192 | 2 x 1425 NVMe SSD | 37,500 | 75 |
| db.m6idn.8xlarge | 32 | — | 128 | 1 x 1900 NVMe SSD | 25,000 | 50 |
| db.m6idn.4xlarge* | 16 | — | 64 | 1 x 950 NVMe SSD | Up to 25,000 | Up to 50 |
| db.m6idn.2xlarge* | 8 | — | 32 | 1 x 474 NVMe SSD | Up to 25,000 | Up to 40 |
| db.m6idn.xlarge* | 4 | — | 16 | 1 x 237 NVMe SSD | Up to 25,000 | Up to 30 |
| db.m6idn.large* | 2 | — | 8 | 1 x 118 NVMe SSD | Up to 25,000 | Up to 25 |
db.m6in – general-purpose instance classes powered by 3rd generation Intel Xeon Scalable processors and network optimization
| Instance class | vCPU | Processor cores | Sockets | ECU | Memory (GiB) | Instance storage (GiB) | Max. EBS bandwidth (Mbps) | Network bandwidth (Gbps) |
|---|---|---|---|---|---|---|---|---|
| db.m6in.metal | 128 | 64 | 2 | — | 512 | EBS-optimized only | 100,000 | 200 |
| db.m6in.32xlarge | 128 | — | 512 | EBS-optimized only | 100,000 | 200 | ||
| db.m6in.24xlarge | 96 | — | 384 | EBS-optimized only | 75,000 | 150 | ||
| db.m6in.16xlarge | 64 | — | 256 | EBS-optimized only | 50,000 | 100 | ||
| db.m6in.12xlarge | 48 | — | 192 | EBS-optimized only | 37,500 | 75 | ||
| db.m6in.8xlarge | 32 | — | 128 | EBS-optimized only | 25,000 | 50 | ||
| db.m6in.4xlarge* | 16 | — | 64 | EBS-optimized only | Up to 25,000 | Up to 50 | ||
| db.m6in.2xlarge* | 8 |