r3 family
The r3 family has 5 sizes on AWS EC2, from 2 to 32 vCPUs and 15.25 to 244 GiB of memory. In US East (N. Virginia), on-demand prices run $0.166 to $2.66 per hour for Linux. 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 | Spot /hr | 1-yr reserved /hr |
|---|---|---|---|---|---|
| r3.large | 2 | 15.25 | $0.166 | $0.0428 | $0.105 |
| r3.xlarge | 4 | 30.5 | $0.333 | $0.088 | $0.209 |
| r3.2xlarge | 8 | 61 | $0.665 | $0.1464 | $0.418 |
| r3.4xlarge | 16 | 122 | $1.33 | $0.3847 | $0.836 |
| r3.8xlarge | 32 | 244 | $2.66 | $0.5466 | $1.672 |
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Prices in USD per hour for Linux; reserved prices are 1 year, no upfront. Updated 2026-11-12 from AWS public price lists. Compare all AWS EC2 instance types.