db.r3.4xlargevsdb.r4.4xlarge
db.r3.4xlarge is 1% cheaper than db.r4.4xlarge on demand in US East (N. Virginia), saving $7.30 a month.
| At a glance | db.r3.4xlarge | db.r4.4xlarge |
|---|---|---|
| On-demand | $1.99/hr1% less | $2.00/hr |
| Size | 16 vCPUs, 122 GiB | 16 vCPUs, 122 GiB |
Prices in US East (N. Virginia)
“Off” is the discount against each type’s own on-demand price. PostgreSQL, USD per hour.
| Option | db.r3.4xlarge | db.r4.4xlarge | db.r4.4xlarge vs db.r3.4xlarge |
|---|---|---|---|
| On-demandPay by the hour | $1.99 | $2.00 | ▲ 1% |
Key differences
The biggest lead each one has.
Where db.r3.4xlarge leads
On-demand price$1.99 vs $2.00 per hour
1% cheaperSustained clock2.5 GHz vs 2.3 GHz
9% higherWhere db.r4.4xlarge leads
Network baseline5 Gbps vs 2 Gbps
2.5× higherEBS baseline bandwidth3,500 Mbps vs 2,000 Mbps
75% higherSpecs
21 of 28 specs differ. Those are in bold.
| Compute5 of 10 differ | db.r3.4xlarge | db.r4.4xlarge |
|---|---|---|
| vCPUs | 16 | 16 |
| Physical cores | 8 | 8 |
| Threads per core | 2 | 2 |
| Architecture | x86_64 | – |
| Processor | Intel Xeon E5-2670 v2 (Ivy Bridge) | – |
| CPU maker | Intel | Intel |
| Clock speed | 2.5 GHz | – |
| Sustained clock | 2.5 GHz | 2.3 GHz |
| Processor features | Intel AVX; Intel Turbo | – |
| Burstable | No | No |
| MemoryAll 1 match | db.r3.4xlarge | db.r4.4xlarge |
|---|---|---|
| Memory (GiB) | 122 | 122 |
| Networking2 of 3 differ | db.r3.4xlarge | db.r4.4xlarge |
|---|---|---|
| Network | High | – |
| Network baseline | 2 Gbps | 5 Gbps |
| Network peak | 10 Gbps | 10 Gbps |
| Storage9 of 9 differ | db.r3.4xlarge | db.r4.4xlarge |
|---|---|---|
| Storage | 1 x 320 SSD | – |
| Local disks | 1 × 320 GB SSD | – |
| EBS throughput | 2000 Mbps | – |
| EBS baseline bandwidth | 2,000 Mbps | 3,500 Mbps |
| EBS max bandwidth | 2,000 Mbps | 3,500 Mbps |
| EBS baseline throughput | 250 MB/s | 437.5 MB/s |
| EBS max throughput | 250 MB/s | 437.5 MB/s |
| EBS baseline IOPS | 16,000 | 18,750 |
| EBS max IOPS | 16,000 | 18,750 |
| Instance details4 of 4 differ | db.r3.4xlarge | db.r4.4xlarge |
|---|---|---|
| Family | r3 | r4 |
| Category | Memory optimized | – |
| Current generation | No | – |
| Normalization factor | 64 | – |
| Other1 of 1 differ | db.r3.4xlarge | db.r4.4xlarge |
|---|---|---|
| Hardware Basis | r3.4xlarge | r4.4xlarge |
On-demand prices by region
Cheapest for db.r3.4xlarge first. PostgreSQL, USD per hour.
| Region | db.r3.4xlarge | db.r4.4xlarge | Difference |
|---|---|---|---|
| US East (N. Virginia)Used in summaryus-east-1 | $1.99 | $2.00 | ▲ 1% |
| US East (Ohio)us-east-2 | $1.99 | $2.00 | ▲ 1% |
| US West (Oregon)us-west-2 | $1.99 | $2.00 | ▲ 1% |
| EU (Ireland)eu-west-1 | $2.22 | $2.24 | ▲ 1% |
| US West (N. California)us-west-1 | $2.22 | $2.24 | ▲ 1% |
| Asia Pacific (Mumbai)ap-south-1 | $2.27 | $2.28 | Same |
| AWS GovCloud (US-West)us-gov-west-1 | $2.388 | $2.408 | ▲ 1% |
| Asia Pacific (Seoul)ap-northeast-2 | $2.39 | $2.40 | Same |
| Asia Pacific (Singapore)ap-southeast-1 | $2.39 | $2.40 | Same |
| Asia Pacific (Sydney)ap-southeast-2 | $2.39 | $2.40 | Same |
| Asia Pacific (Tokyo)ap-northeast-1 | $2.39 | $2.40 | Same |
| EU (Frankfurt)eu-central-1 | $2.40 | $2.44 | ▲ 2% |
| Canada (Central)ca-central-1 | $2.56 | $2.162 | ▼ 16% |
| EU (London)eu-west-2 | $2.72 | $2.352 | ▼ 14% |
| South America (Sao Paulo)sa-east-1 | $4.188 | $4.188 | Same |
Keep exploring
Each type’s own page, and how it compares with others.
AWS RDS PostgreSQL prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.