Memory-optimized (R-family) 4xlarge instances compared
Every Amazon RDS instance in the Memory-optimized (R-family) 4xlarge group — 15 instances priced side by side. Switch region and engine, or sort by any column.
Engine
Architecture
| db.r5.4xlarge | 16 | 128 | $1,460 | $787 | $529 |
| db.r5b.4xlarge | 16 | 128 | $1,729 | $932 | $621 |
| db.r5d.4xlarge | 16 | 128 | $1,669 | $1,218 | $884 |
| db.r6g.4xlarge | 16 | 128 | $1,313 | $708 | $476 |
| db.r6gd.4xlarge | 16 | 128 | $1,502 | $1,096 | $796 |
| db.r6i.4xlarge | 16 | 128 | $1,460 | $787 | $529 |
| db.r6id.4xlarge | 16 | 128 | $1,742 | $1,271 | $923 |
| db.r6idn.4xlarge | 16 | 128 | $2,264 | $1,653 | $1,200 |
| db.r6in.4xlarge | 16 | 128 | $2,020 | $1,475 | $1,071 |
| db.r7g.4xlarge | 16 | 128 | $1,396 | $1,019 | $740 |
| db.r7i.4xlarge | 16 | 128 | $1,460 | $920 | — |
| db.r8g.4xlarge | 16 | 128 | $1,396 | $880 | — |
| db.r8gd.4xlarge | 16 | 128 | $1,594 | — | — |
13 instances · US East (N. Virginia) · prices are for the database instance (compute) only — storage, IOPS, backup, and data transfer are billed separately. Reserved = effective monthly of the all-upfront term. Indicative prices as of July 20, 2026; verify with the provider.