r6i family
The r6i family has 22 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 $0.25 to $16.00 per hour for PostgreSQL, Single-AZ. It is sold in 36 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.r6i.large | 2 | 16 | $0.25 | $0.1444 | |
| db.r6i.xlarge | 4 | 32 | $0.5 | $0.2888 | |
| db.r6i.xlarge.tpc2.mem4x | 4 | 128 | Oracle Enterprise BYOL | $1.864 | $1.342 |
| db.r6i.2xlarge | 8 | 64 | $1.00 | $0.5776 | |
| db.r6i.2xlarge.tpc1.mem2x | 8 | 128 | Oracle Enterprise BYOL | $1.864 | $1.342 |
| db.r6i.2xlarge.tpc2.mem4x | 8 | 256 | Oracle Enterprise BYOL | $3.728 | $2.684 |
| db.r6i.4xlarge | 16 | 128 | $2.00 | $1.155 | |
| db.r6i.4xlarge.tpc2.mem2x | 16 | 256 | Oracle Enterprise BYOL | $3.728 | $2.684 |
| db.r6i.4xlarge.tpc2.mem3x | 16 | 384 | Oracle Enterprise BYOL | $5.592 | $4.026 |
| db.r6i.4xlarge.tpc2.mem4x | 16 | 512 | Oracle Enterprise BYOL | $7.456 | $5.368 |
| db.r6i.6xlarge.tpc2.mem4x | 24 | 768 | Oracle Enterprise BYOL | $11.184 | $8.053 |
| db.r6i.8xlarge | 32 | 256 | $4.00 | $2.31 | |
| db.r6i.8xlarge.tpc2.mem4x | 32 | 1024 | Oracle Enterprise BYOL | $14.912 | $10.737 |
| db.r6i.12xlarge | 48 | 384 | $6.00 | $3.466 | |
| db.r6i.16xlarge | 64 | 512 | $8.00 | $4.621 | |
| db.r6i.24xlarge | 96 | 768 | $12.00 | $6.931 | |
| db.r6i.32xlarge | 128 | 1024 | $16.00 | $9.242 | |
| db.r6i.metal | 128 | 1024 | Oracle Enterprise BYOL | $11.184 | – |
| db.r6i.2xlarge.tpc2.mem8x | – | – | Oracle Enterprise BYOL | $7.456 | $5.368 |
| db.r6i.8xlarge.tpc2.mem3x | – | – | Oracle Enterprise BYOL | $11.184 | $8.053 |
| db.r6i.large.tpc1.mem2x | – | – | Oracle Enterprise BYOL | $0.466 | $0.3355 |
| db.r6i.xlarge.tpc2.mem2x | – | – | Oracle Enterprise BYOL | $0.932 | $0.671 |
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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.