x1 family
The x1 family has 2 sizes on AWS RDS, from 64 to 128 vCPUs and 976 to 1952 GiB of memory. In US East (N. Virginia), on-demand prices run $11.20 to $22.40 per hour for PostgreSQL, Single-AZ. It is sold in 18 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.x1.16xlarge | 64 | 976 | Oracle Enterprise BYOL | $11.20 | – |
| db.x1.32xlarge | 128 | 1952 | Oracle Enterprise BYOL | $22.40 | – |
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Regions
Asia Pacific (Hong Kong)Asia Pacific (Tokyo)Asia Pacific (Seoul)Asia Pacific (Mumbai)Asia Pacific (Singapore)Asia Pacific (Sydney)Canada (Central)EU (Frankfurt)EU (Ireland)EU (London)EU (Paris)South America (Sao Paulo)US East (N. Virginia)US East (Ohio)AWS GovCloud (US-East)AWS GovCloud (US-West)US West (N. California)US West (Oregon)
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.