r6g family
The r6g family has 7 sizes on AWS RDS, from 2 to 64 vCPUs and 16 to 512 GiB of memory. In US East (N. Virginia), on-demand prices run $0.225 to $7.194 per hour for PostgreSQL, Single-AZ. It is sold in 36 regions and listed as memory optimized and Arm (Graviton).
Sizes and prices in US East (N. Virginia)
| Type | vCPUs | Memory (GiB) | On-demand /hr | 1-yr reserved /hr |
|---|---|---|---|---|
| db.r6g.large | 2 | 16 | $0.225 | $0.1298 |
| db.r6g.xlarge | 4 | 32 | $0.45 | $0.2597 |
| db.r6g.2xlarge | 8 | 64 | $0.899 | $0.5194 |
| db.r6g.4xlarge | 16 | 128 | $1.798 | $1.039 |
| db.r6g.8xlarge | 32 | 256 | $3.597 | $2.078 |
| db.r6g.12xlarge | 48 | 384 | $5.395 | $3.116 |
| db.r6g.16xlarge | 64 | 512 | $7.194 | $4.155 |
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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.