r5 family
The r5 family has 20 sizes on AWS RDS, from 2 to 96 vCPUs and 16 to 768 GiB of memory. In US East (N. Virginia), on-demand prices run $0.25 to $12.00 per hour for PostgreSQL, Single-AZ. It is sold in 31 regions and listed as memory optimized.
Sizes and prices in US East (N. Virginia)
| Type | vCPUs | Memory (GiB) | Tier | On-demand /hr | 1-yr reserved /hr |
|---|---|---|---|---|---|
| db.r5.large | 2 | 16 | $0.25 | $0.1444 | |
| db.r5.large.tpc1.mem2x | 2 | 32 | Oracle Enterprise BYOL | $0.466 | $0.2695 |
| db.r5.xlarge | 4 | 32 | $0.5 | $0.2888 | |
| db.r5.xlarge.tpc2.mem4x | 4 | 128 | Oracle Enterprise BYOL | $1.864 | $1.078 |
| db.r5.2xlarge | 8 | 64 | $1.00 | $0.5775 | |
| db.r5.2xlarge.tpc1.mem2x | 8 | 128 | Oracle Enterprise BYOL | $1.864 | $1.078 |
| db.r5.2xlarge.tpc2.mem8x | 8 | 512 | Oracle Enterprise BYOL | $7.456 | $4.313 |
| db.r5.4xlarge | 16 | 128 | $2.00 | $1.155 | |
| db.r5.4xlarge.tpc2.mem2x | 16 | 256 | Oracle Enterprise BYOL | $3.728 | $2.156 |
| db.r5.4xlarge.tpc2.mem3x | 16 | 384 | Oracle Enterprise BYOL | $5.592 | $3.235 |
| db.r5.4xlarge.tpc2.mem4x | 16 | 512 | Oracle Enterprise BYOL | $7.456 | $4.313 |
| db.r5.8xlarge | 32 | 256 | $4.00 | $2.31 | |
| db.r5.8xlarge.tpc2.mem3x | 32 | 768 | Oracle Enterprise BYOL | $11.184 | $6.469 |
| db.r5.12xlarge | 48 | 384 | $6.00 | $3.465 | |
| db.r5.12xlarge.tpc2.mem2x | 48 | 768 | Oracle Enterprise BYOL | $11.184 | $6.469 |
| db.r5.16xlarge | 64 | 512 | $8.00 | $4.62 | |
| db.r5.24xlarge | 96 | 768 | $12.00 | $6.93 | |
| db.r5.2xlarge.tpc2.mem4x | – | – | Oracle Enterprise BYOL | $3.728 | $2.156 |
| db.r5.6xlarge.tpc2.mem4x | – | – | Oracle Enterprise BYOL | $11.184 | $6.469 |
| db.r5.xlarge.tpc2.mem2x | – | – | Oracle Enterprise BYOL | $0.932 | $0.5391 |
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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.