m9g family
The m9g family has 9 sizes on AWS RDS, from 2 to 192 vCPUs and 8 to 768 GiB of memory. In US East (N. Virginia), on-demand prices run $0.183 to $17.58 per hour for PostgreSQL, Single-AZ. It is sold in 4 regions and listed as Arm (Graviton) and general purpose.
Sizes and prices in US East (N. Virginia)
| Type | vCPUs | Memory (GiB) | On-demand /hr | 1-yr Savings Plan /hr |
|---|---|---|---|---|
| db.m9g.large | 2 | 8 | $0.183 | $0.1464 |
| db.m9g.xlarge | 4 | 16 | $0.366 | $0.2928 |
| db.m9g.2xlarge | 8 | 32 | $0.732 | $0.5856 |
| db.m9g.4xlarge | 16 | 64 | $1.465 | $1.172 |
| db.m9g.8xlarge | 32 | 128 | $2.93 | $2.344 |
| db.m9g.12xlarge | 48 | 192 | $4.395 | $3.516 |
| db.m9g.16xlarge | 64 | 256 | $5.86 | $4.688 |
| db.m9g.24xlarge | 96 | 384 | $8.79 | $7.032 |
| db.m9g.48xlarge | 192 | 768 | $17.58 | $14.064 |
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Prices in USD per hour for PostgreSQL, Single-AZ; reserved prices are 1 year, no upfront. Updated 2026-11-12 from AWS public price lists. Compare all AWS RDS sizes.