db.r7g.4xlargevsdb.r7i.4xlarge.tpc2.mem3x
db.r7g.4xlarge is 68% cheaper than db.r7i.4xlarge.tpc2.mem3x on demand in US East (N. Virginia), saving $2,983.51 a month.
| At a glance | db.r7g.4xlarge | db.r7i.4xlarge.tpc2.mem3x |
|---|---|---|
| On-demand | $1.913/hr68% less | $6.00/hr |
| Lowest rate | $1.473/hr63% less1-yr reserved, no upfront | $4.02/hr1-yr reserved, no upfront |
| Size | 16 vCPUs, 128 GiB | 16 vCPUs, 384 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.r7g.4xlarge | db.r7i.4xlarge.tpc2.mem3x | db.r7i.4xlarge.tpc2.mem3x vs db.r7g.4xlarge |
|---|---|---|---|
| On-demandPay by the hour | $1.913 | $6.00 | ▲ 214% |
| 1-yr reservedNo upfront | 23% off$1.473 | 33% off$4.02 | ▲ 173% |
| 1-yr savings planHourly commitment | 20% off$1.53 | 20% off$4.80 | ▲ 214% |
Key differences
The biggest lead each one has.
Where db.r7g.4xlarge leads
On-demand price$1.913 vs $6.00 per hour
68% cheaperWhere db.r7i.4xlarge.tpc2.mem3x leads
Memory (GiB)384 vs 128
3× higherSpecs
20 of 24 specs differ. Those are in bold.
| Compute7 of 8 differ | db.r7g.4xlarge | db.r7i.4xlarge.tpc2.mem3x |
|---|---|---|
| vCPUs | 16 | 16 |
| Physical cores | 16 | – |
| Threads per core | 1 | – |
| Architecture | arm64 | – |
| Processor | AWS Graviton3 | – |
| CPU maker | AWS | – |
| Sustained clock | 2.6 GHz | – |
| Burstable | No | – |
| Memory1 of 1 differ | db.r7g.4xlarge | db.r7i.4xlarge.tpc2.mem3x |
|---|---|---|
| Memory (GiB) | 128 | 384 |
| Networking3 of 3 differ | db.r7g.4xlarge | db.r7i.4xlarge.tpc2.mem3x |
|---|---|---|
| Network | Up to 15 Gigabit | 18.75 Gbps |
| Network baseline | 7.5 Gbps | – |
| Network peak | 15 Gbps | – |
| Storage6 of 7 differ | db.r7g.4xlarge | db.r7i.4xlarge.tpc2.mem3x |
|---|---|---|
| Storage | EBS Only | EBS Only |
| EBS baseline bandwidth | 5,000 Mbps | – |
| EBS max bandwidth | 10,000 Mbps | – |
| EBS baseline throughput | 625 MB/s | – |
| EBS max throughput | 1,250 MB/s | – |
| EBS baseline IOPS | 20,000 | – |
| EBS max IOPS | 40,000 | – |
| Instance details2 of 4 differ | db.r7g.4xlarge | db.r7i.4xlarge.tpc2.mem3x |
|---|---|---|
| Family | r7g | r7i |
| Category | Memory optimized | Memory optimized |
| Current generation | Yes | Yes |
| Normalization factor | 32 | 192 |
| Other1 of 1 differ | db.r7g.4xlarge | db.r7i.4xlarge.tpc2.mem3x |
|---|---|---|
| Hardware Basis | r7g.4xlarge | – |
On-demand prices by region
Cheapest for db.r7g.4xlarge first. PostgreSQL, USD per hour.
| Region | db.r7g.4xlarge | db.r7i.4xlarge.tpc2.mem3x | Difference |
|---|---|---|---|
| US East (N. Virginia)Used in summaryus-east-1 | $1.913 | $6.00 | ▲ 214% |
| US East (Ohio)us-east-2 | $1.913 | $6.00 | ▲ 214% |
| US West (Oregon)us-west-2 | $1.913 | $6.00 | ▲ 214% |
| Asia Pacific (Malaysia)ap-southeast-5 | $1.952 | $6.12 | ▲ 214% |
| Asia Pacific (Thailand)ap-southeast-7 | $1.952 | $6.12 | ▲ 214% |
| EU (Stockholm)eu-north-1 | $1.963 | $6.168 | ▲ 214% |
| Mexico (Central)mx-central-1 | $2.008 | $6.312 | ▲ 214% |
| Asia Pacific (Taipei)ap-east-2 | $2.064 | $6.48 | ▲ 214% |
| Canada (Central)ca-central-1 | $2.066 | $6.48 | ▲ 214% |
| US West (N. California)us-west-1 | $2.142 | $6.72 | ▲ 214% |
| EU (Ireland)eu-west-1 | $2.143 | $6.72 | ▲ 214% |
| Asia Pacific (Mumbai)ap-south-1 | $2.176 | $6.84 | ▲ 214% |
| EU (London)eu-west-2 | $2.244 | $7.056 | ▲ 214% |
| EU (Milan)eu-south-1 | $2.244 | $7.056 | ▲ 214% |
| Asia Pacific (Singapore)ap-southeast-1 | $2.295 | $7.20 | ▲ 214% |
| Asia Pacific (Sydney)ap-southeast-2 | $2.295 | $7.20 | ▲ 214% |
| Asia Pacific (Tokyo)ap-northeast-1 | $2.295 | $7.20 | ▲ 214% |
| Asia Pacific (Seoul)ap-northeast-2 | $2.295 | $7.20 | ▲ 214% |
| AWS GovCloud (US-East)us-gov-east-1 | $2.296 | $7.20 | ▲ 214% |
| AWS GovCloud (US-West)us-gov-west-1 | $2.296 | $7.20 | ▲ 214% |
| EU (Frankfurt)eu-central-1 | $2.329 | $7.32 | ▲ 214% |
| EU (Paris)eu-west-3 | $2.544 | $7.056 | ▲ 177% |
| South America (Sao Paulo)sa-east-1 | $3.042 | $9.54 | ▲ 214% |
Keep exploring
Each type’s own page, and how it compares with others.
db.r7g.4xlarge
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db.r7i.4xlarge.tpc2.mem3x
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AWS RDS PostgreSQL prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.