db.r5.4xlargevsdb.r6i.4xlarge.tpc2.mem2x
db.r5.4xlarge is 46% cheaper than db.r6i.4xlarge.tpc2.mem2x on demand in US East (N. Virginia), saving $1,261.44 a month.
| At a glance | db.r5.4xlarge | db.r6i.4xlarge.tpc2.mem2x |
|---|---|---|
| On-demand | $2.00/hr46% less | $3.728/hr |
| Lowest rate | $1.155/hr57% less1-yr reserved, no upfront | $2.684/hr1-yr reserved, no upfront |
| Size | 16 vCPUs, 128 GiB | 16 vCPUs, 256 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.r5.4xlarge | db.r6i.4xlarge.tpc2.mem2x | db.r6i.4xlarge.tpc2.mem2x vs db.r5.4xlarge |
|---|---|---|---|
| On-demandPay by the hour | $2.00 | $3.728 | ▲ 86% |
| 1-yr reservedNo upfront | 42% off$1.155 | 28% off$2.684 | ▲ 132% |
Key differences
The biggest lead each one has.
Where db.r5.4xlarge leads
On-demand price$2.00 vs $3.728 per hour
46% cheaperWhere db.r6i.4xlarge.tpc2.mem2x leads
Memory (GiB)256 vs 128
2× higherSpecs
21 of 24 specs differ. Those are in bold.
| Compute7 of 8 differ | db.r5.4xlarge | db.r6i.4xlarge.tpc2.mem2x |
|---|---|---|
| vCPUs | 16 | 16 |
| Physical cores | 8 | – |
| Threads per core | 2 | – |
| Architecture | – | x86_64 |
| Processor | – | Intel Xeon Scalable Ice Lake |
| CPU maker | Intel | – |
| Sustained clock | 3.1 GHz | – |
| Burstable | No | – |
| Memory1 of 1 differ | db.r5.4xlarge | db.r6i.4xlarge.tpc2.mem2x |
|---|---|---|
| Memory (GiB) | 128 | 256 |
| Networking3 of 3 differ | db.r5.4xlarge | db.r6i.4xlarge.tpc2.mem2x |
|---|---|---|
| Network | – | 12.5 Gbps |
| Network baseline | 5 Gbps | – |
| Network peak | 10 Gbps | – |
| Storage6 of 7 differ | db.r5.4xlarge | db.r6i.4xlarge.tpc2.mem2x |
|---|---|---|
| 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 | 18,750 | – |
| EBS max IOPS | 18,750 | – |
| Instance details3 of 4 differ | db.r5.4xlarge | db.r6i.4xlarge.tpc2.mem2x |
|---|---|---|
| Family | r5 | r6i |
| Category | Memory optimized | Memory optimized |
| Current generation | – | Yes |
| Normalization factor | 32 | 64 |
| Other1 of 1 differ | db.r5.4xlarge | db.r6i.4xlarge.tpc2.mem2x |
|---|---|---|
| Hardware Basis | r5.4xlarge | – |
On-demand prices by region
Cheapest for db.r5.4xlarge first. PostgreSQL, USD per hour.
| Region | db.r5.4xlarge | db.r6i.4xlarge.tpc2.mem2x | Difference |
|---|---|---|---|
| US East (N. Virginia)Used in summaryus-east-1 | $2.00 | $3.728 | ▲ 86% |
| US East (Ohio)us-east-2 | $2.00 | $3.728 | ▲ 86% |
| US West (Oregon)us-west-2 | $2.00 | $3.728 | ▲ 86% |
| EU (Stockholm)eu-north-1 | $2.057 | $3.92 | ▲ 91% |
| Canada (Central)ca-central-1 | $2.162 | $4.096 | ▲ 89% |
| EU (Ireland)eu-west-1 | $2.24 | $4.128 | ▲ 84% |
| Europe (Spain)eu-south-2 | $2.24 | $4.128 | ▲ 84% |
| US West (N. California)us-west-1 | $2.24 | $4.112 | ▲ 84% |
| Asia Pacific (Hyderabad)ap-south-2 | $2.28 | $4.208 | ▲ 85% |
| Asia Pacific (Mumbai)ap-south-1 | $2.28 | $4.208 | ▲ 85% |
| Israel (Tel Aviv)il-central-1 | $2.35 | $4.334 | ▲ 84% |
| EU (London)eu-west-2 | $2.352 | $4.352 | ▲ 85% |
| EU (Milan)eu-south-1 | $2.352 | $4.336 | ▲ 84% |
| EU (Paris)eu-west-3 | $2.352 | $4.336 | ▲ 84% |
| Asia Pacific (Jakarta)ap-southeast-3 | $2.40 | $4.432 | ▲ 85% |
| Asia Pacific (Melbourne)ap-southeast-4 | $2.40 | $4.424 | ▲ 84% |
| Asia Pacific (Osaka)ap-northeast-3 | $2.40 | $4.432 | ▲ 85% |
| Asia Pacific (Seoul)ap-northeast-2 | $2.40 | $4.432 | ▲ 85% |
| Asia Pacific (Singapore)ap-southeast-1 | $2.40 | $4.432 | ▲ 85% |
| Asia Pacific (Sydney)ap-southeast-2 | $2.40 | $4.424 | ▲ 84% |
| Asia Pacific (Tokyo)ap-northeast-1 | $2.40 | $4.432 | ▲ 85% |
| AWS GovCloud (US-East)us-gov-east-1 | $2.41 | $4.488 | ▲ 86% |
| AWS GovCloud (US-West)us-gov-west-1 | $2.41 | $4.48 | ▲ 86% |
| EU (Frankfurt)eu-central-1 | $2.44 | $4.512 | ▲ 85% |
| Middle East (Bahrain)me-south-1 | $2.464 | $4.544 | ▲ 84% |
| Middle East (UAE)me-central-1 | $2.464 | $4.544 | ▲ 84% |
| Canada West (Calgary)ca-west-1 | $2.56 | $4.096 | ▲ 60% |
| Asia Pacific (Hong Kong)ap-east-1 | $2.64 | $4.875 | ▲ 85% |
| Africa (Cape Town)af-south-1 | $2.666 | $4.912 | ▲ 84% |
| Europe (Zurich)eu-central-2 | $2.688 | $4.963 | ▲ 85% |
| South America (Sao Paulo)sa-east-1 | $4.188 | $7.776 | ▲ 86% |
Keep exploring
Each type’s own page, and how it compares with others.
db.r6i.4xlarge.tpc2.mem2x
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AWS RDS PostgreSQL prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.