db.r6g.4xlargevsdb.r6i.4xlarge.tpc2.mem3x
db.r6g.4xlarge is 68% cheaper than db.r6i.4xlarge.tpc2.mem3x on demand in US East (N. Virginia), saving $2,769.62 a month. They use different processor architectures (arm64 and x86_64), so software built for one may need rebuilding to run on the other.
| At a glance | db.r6g.4xlarge | db.r6i.4xlarge.tpc2.mem3x |
|---|---|---|
| On-demand | $1.798/hr68% less | $5.592/hr |
| Lowest rate | $1.039/hr74% less1-yr reserved, no upfront | $4.026/hr1-yr reserved, no upfront |
| Size | 16 vCPUs, 128 GiB | 16 vCPUs, 384 GiB |
| Processor | AWS Graviton2 | Intel Xeon Scalable Ice Lake |
| Architecture | arm64 | x86_64 |
Prices in US East (N. Virginia)
“Off” is the discount against each type’s own on-demand price. PostgreSQL, USD per hour.
| Option | db.r6g.4xlarge | db.r6i.4xlarge.tpc2.mem3x | db.r6i.4xlarge.tpc2.mem3x vs db.r6g.4xlarge |
|---|---|---|---|
| On-demandPay by the hour | $1.798 | $5.592 | ▲ 211% |
| 1-yr reservedNo upfront | 42% off$1.039 | 28% off$4.026 | ▲ 288% |
Key differences
The biggest lead each one has.
Where db.r6g.4xlarge leads
On-demand price$1.798 vs $5.592 per hour
68% cheaperWhere db.r6i.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.r6g.4xlarge | db.r6i.4xlarge.tpc2.mem3x |
|---|---|---|
| vCPUs | 16 | 16 |
| Physical cores | 16 | – |
| Threads per core | 1 | – |
| Architecture | arm64 | x86_64 |
| Processor | AWS Graviton2 | Intel Xeon Scalable Ice Lake |
| CPU maker | AWS | – |
| Sustained clock | 2.5 GHz | – |
| Burstable | No | – |
| Memory1 of 1 differ | db.r6g.4xlarge | db.r6i.4xlarge.tpc2.mem3x |
|---|---|---|
| Memory (GiB) | 128 | 384 |
| Networking3 of 3 differ | db.r6g.4xlarge | db.r6i.4xlarge.tpc2.mem3x |
|---|---|---|
| Network | Up to 10 Gigabit | 18.75 Gbps |
| Network baseline | 5 Gbps | – |
| Network peak | 10 Gbps | – |
| Storage6 of 7 differ | db.r6g.4xlarge | db.r6i.4xlarge.tpc2.mem3x |
|---|---|---|
| Storage | EBS Only | EBS Only |
| EBS baseline bandwidth | 4,750 Mbps | – |
| EBS max bandwidth | 4,750 Mbps | – |
| EBS baseline throughput | 593.75 MB/s | – |
| EBS max throughput | 593.75 MB/s | – |
| EBS baseline IOPS | 20,000 | – |
| EBS max IOPS | 20,000 | – |
| Instance details2 of 4 differ | db.r6g.4xlarge | db.r6i.4xlarge.tpc2.mem3x |
|---|---|---|
| Family | r6g | r6i |
| Category | Memory optimized | Memory optimized |
| Current generation | Yes | Yes |
| Normalization factor | 64 | 192 |
| Other1 of 1 differ | db.r6g.4xlarge | db.r6i.4xlarge.tpc2.mem3x |
|---|---|---|
| Hardware Basis | r6g.4xlarge | – |
On-demand prices by region
Cheapest for db.r6g.4xlarge first. PostgreSQL, USD per hour.
| Region | db.r6g.4xlarge | db.r6i.4xlarge.tpc2.mem3x | Difference |
|---|---|---|---|
| US East (N. Virginia)Used in summaryus-east-1 | $1.798 | $5.592 | ▲ 211% |
| US East (Ohio)us-east-2 | $1.798 | $5.592 | ▲ 211% |
| US West (Oregon)us-west-2 | $1.798 | $5.592 | ▲ 211% |
| Asia Pacific (Malaysia)ap-southeast-5 | $1.84 | $6.753 | ▲ 267% |
| EU (Stockholm)eu-north-1 | $1.849 | $5.88 | ▲ 218% |
| Canada (Central)ca-central-1 | $1.944 | $6.144 | ▲ 216% |
| Canada West (Calgary)ca-west-1 | $1.944 | $6.144 | ▲ 216% |
| EU (Ireland)eu-west-1 | $2.014 | $6.187 | ▲ 207% |
| US West (N. California)us-west-1 | $2.014 | $6.163 | ▲ 206% |
| Europe (Spain)eu-south-2 | $2.016 | $6.192 | ▲ 207% |
| Asia Pacific (Hyderabad)ap-south-2 | $2.048 | $6.312 | ▲ 208% |
| Asia Pacific (Mumbai)ap-south-1 | $2.05 | $6.312 | ▲ 208% |
| EU (Milan)eu-south-1 | $2.112 | $6.504 | ▲ 208% |
| EU (Paris)eu-west-3 | $2.112 | $6.499 | ▲ 208% |
| EU (London)eu-west-2 | $2.115 | $6.528 | ▲ 209% |
| Israel (Tel Aviv)il-central-1 | $2.117 | $6.496 | ▲ 207% |
| Asia Pacific (Osaka)ap-northeast-3 | $2.157 | $6.648 | ▲ 208% |
| Asia Pacific (Jakarta)ap-southeast-3 | $2.158 | $6.648 | ▲ 208% |
| Asia Pacific (Melbourne)ap-southeast-4 | $2.158 | $6.634 | ▲ 207% |
| Asia Pacific (Seoul)ap-northeast-2 | $2.158 | $6.648 | ▲ 208% |
| Asia Pacific (Singapore)ap-southeast-1 | $2.158 | $6.648 | ▲ 208% |
| Asia Pacific (Sydney)ap-southeast-2 | $2.158 | $6.634 | ▲ 207% |
| Asia Pacific (Tokyo)ap-northeast-1 | $2.158 | $6.648 | ▲ 208% |
| AWS GovCloud (US-East)us-gov-east-1 | $2.158 | $6.732 | ▲ 212% |
| AWS GovCloud (US-West)us-gov-west-1 | $2.158 | $6.72 | ▲ 211% |
| EU (Frankfurt)eu-central-1 | $2.194 | $6.768 | ▲ 208% |
| Middle East (Bahrain)me-south-1 | $2.216 | $6.816 | ▲ 208% |
| Middle East (UAE)me-central-1 | $2.216 | $6.816 | ▲ 208% |
| Asia Pacific (Hong Kong)ap-east-1 | $2.374 | $7.313 | ▲ 208% |
| Africa (Cape Town)af-south-1 | $2.395 | $7.368 | ▲ 208% |
| Europe (Zurich)eu-central-2 | $2.411 | $7.445 | ▲ 209% |
| South America (Sao Paulo)sa-east-1 | $3.742 | $11.664 | ▲ 212% |
Keep exploring
Each type’s own page, and how it compares with others.
db.r6g.4xlarge
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db.r6i.4xlarge.tpc2.mem3x
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AWS RDS PostgreSQL prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.