r6idn family
The r6idn family has 9 sizes on AWS RDS, from 2 to 128 vCPUs and 16 to 1024 GiB of memory. In US East (N. Virginia), on-demand prices run $0.388 to $24.81 per hour for PostgreSQL, Single-AZ. It is sold in 5 regions and listed as memory optimized.
Sizes and prices in US East (N. Virginia)
| Type | vCPUs | Memory (GiB) | On-demand /hr | 1-yr reserved /hr |
|---|---|---|---|---|
| db.r6idn.large | 2 | 16 | $0.388 | $0.2985 |
| db.r6idn.xlarge | 4 | 32 | $0.775 | $0.597 |
| db.r6idn.2xlarge | 8 | 64 | $1.551 | $1.194 |
| db.r6idn.4xlarge | 16 | 128 | $3.101 | $2.388 |
| db.r6idn.8xlarge | 32 | 256 | $6.203 | $4.776 |
| db.r6idn.12xlarge | 48 | 384 | $9.304 | $7.164 |
| db.r6idn.16xlarge | 64 | 512 | $12.405 | $9.552 |
| db.r6idn.24xlarge | 96 | 768 | $18.608 | $14.328 |
| db.r6idn.32xlarge | 128 | 1024 | $24.81 | $19.104 |
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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.