db.r5.12xlargevsdb.r5b.12xlarge
db.r5.12xlarge is 16% cheaper than db.r5b.12xlarge on demand in US East (N. Virginia), saving $805.92 a month.
| At a glance | db.r5.12xlarge | db.r5b.12xlarge |
|---|---|---|
| On-demand | $6.00/hr16% less | $7.104/hr |
| Lowest rate | $3.465/hr16% less1-yr reserved, no upfront | $4.115/hr1-yr reserved, no upfront |
| Size | 48 vCPUs, 384 GiB | 48 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.r5.12xlarge | db.r5b.12xlarge | db.r5b.12xlarge vs db.r5.12xlarge |
|---|---|---|---|
| On-demandPay by the hour | $6.00 | $7.104 | ▲ 18% |
| 1-yr reservedNo upfront | 42% off$3.465 | 42% off$4.115 | ▲ 19% |
Key differences
The biggest lead each one has.
Where db.r5.12xlarge leads
On-demand price$6.00 vs $7.104 per hour
16% cheaperWhere db.r5b.12xlarge leads
EBS baseline IOPS130,000 vs 40,000
3.3× higherSpecs
8 of 19 specs differ. Those are in bold.
| ComputeAll 6 match | db.r5.12xlarge | db.r5b.12xlarge |
|---|---|---|
| vCPUs | 48 | 48 |
| Physical cores | 24 | 24 |
| Threads per core | 2 | 2 |
| CPU maker | Intel | Intel |
| Sustained clock | 3.1 GHz | 3.1 GHz |
| Burstable | No | No |
| MemoryAll 1 match | db.r5.12xlarge | db.r5b.12xlarge |
|---|---|---|
| Memory (GiB) | 384 | 384 |
| NetworkingAll 2 match | db.r5.12xlarge | db.r5b.12xlarge |
|---|---|---|
| Network baseline | 12 Gbps | 12 Gbps |
| Network peak | 12 Gbps | 12 Gbps |
| Storage6 of 7 differ | db.r5.12xlarge | db.r5b.12xlarge |
|---|---|---|
| Storage | EBS Only | EBS Only |
| EBS baseline bandwidth | 9,500 Mbps | 30,000 Mbps |
| EBS max bandwidth | 9,500 Mbps | 30,000 Mbps |
| EBS baseline throughput | 1,187.5 MB/s | 3,750 MB/s |
| EBS max throughput | 1,187.5 MB/s | 3,750 MB/s |
| EBS baseline IOPS | 40,000 | 130,000 |
| EBS max IOPS | 40,000 | 130,000 |
| Instance details1 of 2 differ | db.r5.12xlarge | db.r5b.12xlarge |
|---|---|---|
| Family | r5 | r5b |
| Category | Memory optimized | Memory optimized |
| Other1 of 1 differ | db.r5.12xlarge | db.r5b.12xlarge |
|---|---|---|
| Hardware Basis | r5.12xlarge | r5b.12xlarge |
On-demand prices by region
Cheapest for db.r5.12xlarge first. PostgreSQL, USD per hour.
| Region | db.r5.12xlarge | db.r5b.12xlarge | Difference |
|---|---|---|---|
| US East (N. Virginia)Used in summaryus-east-1 | $6.00 | $7.104 | ▲ 18% |
| US East (Ohio)us-east-2 | $6.00 | $7.104 | ▲ 18% |
| US West (Oregon)us-west-2 | $6.00 | $7.104 | ▲ 18% |
| EU (Stockholm)eu-north-1 | $6.172 | $7.013 | ▲ 14% |
| Canada (Central)ca-central-1 | $6.486 | $7.237 | ▲ 12% |
| EU (Ireland)eu-west-1 | $6.72 | $7.415 | ▲ 10% |
| EU (London)eu-west-2 | $7.056 | $7.77 | ▲ 10% |
| EU (Milan)eu-south-1 | $7.056 | $7.77 | ▲ 10% |
| Asia Pacific (Seoul)ap-northeast-2 | $7.20 | $7.903 | ▲ 10% |
| Asia Pacific (Singapore)ap-southeast-1 | $7.20 | $8.424 | ▲ 17% |
| Asia Pacific (Sydney)ap-southeast-2 | $7.20 | $8.036 | ▲ 12% |
| Asia Pacific (Tokyo)ap-northeast-1 | $7.20 | $8.568 | ▲ 19% |
| EU (Frankfurt)eu-central-1 | $7.32 | $8.573 | ▲ 17% |
| South America (Sao Paulo)sa-east-1 | $12.564 | $10.523 | ▼ 16% |
Keep exploring
Each type’s own page, and how it compares with others.
db.r5b.12xlarge
db.r5b.12xlarge prices and specsEvery size in the r5b familyCompare db.r5b.12xlarge with
AWS RDS PostgreSQL prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.