r4 family
The r4 family has 5 sizes on Amazon Neptune, from 2 to 32 vCPUs and 15.25 to 244 GiB of memory. In US East (N. Virginia), on-demand prices run $0.348 to $5.568 per hour for Standard storage. It is sold in 13 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.r4.large | 2 | 15.25 | $0.348 | – |
| db.r4.xlarge | 4 | 30.5 | $0.696 | – |
| db.r4.2xlarge | 8 | 61 | $1.392 | – |
| db.r4.4xlarge | 16 | 122 | $2.784 | – |
| db.r4.8xlarge | 32 | 244 | $5.568 | – |
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Prices in USD per hour for Standard storage; Savings Plan prices are a 1-year Database Savings Plan, no upfront. Cluster storage, I/O (on Standard storage) and backups are billed on top. Updated 2026-11-12 from AWS public price lists. Compare all Amazon Neptune sizes.