db.r6i.8xlargevsdb.r6idn.8xlarge
db.r6i.8xlarge is 36% cheaper than db.r6idn.8xlarge on demand in US East (N. Virginia), saving $1,608.19 a month.
| At a glance | db.r6i.8xlarge | db.r6idn.8xlarge |
|---|---|---|
| On-demand | $4.00/hr36% less | $6.203/hr |
| Lowest rate | $2.31/hr52% less1-yr reserved, no upfront | $4.776/hr1-yr reserved, no upfront |
| Size | 32 vCPUs, 256 GiB | 32 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.r6i.8xlarge | db.r6idn.8xlarge | db.r6idn.8xlarge vs db.r6i.8xlarge |
|---|---|---|---|
| On-demandPay by the hour | $4.00 | $6.203 | ▲ 55% |
| 1-yr reservedNo upfront | 42% off$2.31 | 23% off$4.776 | ▲ 107% |
Key differences
The biggest lead each one has.
Where db.r6i.8xlarge leads
On-demand price$4.00 vs $6.203 per hour
36% cheaperWhere db.r6idn.8xlarge leads
Network baseline50 Gbps vs 12.5 Gbps
4× higherEBS baseline bandwidth25,000 Mbps vs 10,000 Mbps
2.5× higherSpecs
18 of 25 specs differ. Those are in bold.
| Compute2 of 8 differ | db.r6i.8xlarge | db.r6idn.8xlarge |
|---|---|---|
| vCPUs | 32 | 32 |
| Physical cores | 16 | 16 |
| Threads per core | 2 | 2 |
| Architecture | x86_64 | – |
| Processor | Intel Xeon Scalable Ice Lake | – |
| CPU maker | Intel | Intel |
| Sustained clock | 3.5 GHz | 3.5 GHz |
| Burstable | No | No |
| MemoryAll 1 match | db.r6i.8xlarge | db.r6idn.8xlarge |
|---|---|---|
| Memory (GiB) | 256 | 256 |
| Networking3 of 3 differ | db.r6i.8xlarge | db.r6idn.8xlarge |
|---|---|---|
| Network | 12.5 Gbps | – |
| Network baseline | 12.5 Gbps | 50 Gbps |
| Network peak | 12.5 Gbps | 50 Gbps |
| Storage8 of 8 differ | db.r6i.8xlarge | db.r6idn.8xlarge |
|---|---|---|
| Storage | EBS Only | – |
| Local disks | – | 1 × 1,900 GB SSD |
| EBS baseline bandwidth | 10,000 Mbps | 25,000 Mbps |
| EBS max bandwidth | 10,000 Mbps | 25,000 Mbps |
| EBS baseline throughput | 1,250 MB/s | 3,125 MB/s |
| EBS max throughput | 1,250 MB/s | 3,125 MB/s |
| EBS baseline IOPS | 40,000 | 100,000 |
| EBS max IOPS | 40,000 | 100,000 |
| Instance details4 of 4 differ | db.r6i.8xlarge | db.r6idn.8xlarge |
|---|---|---|
| Family | r6i | r6idn |
| Category | Memory optimized | – |
| Current generation | Yes | – |
| Normalization factor | – | 64 |
| Other1 of 1 differ | db.r6i.8xlarge | db.r6idn.8xlarge |
|---|---|---|
| Hardware Basis | r6i.8xlarge | r6idn.8xlarge |
On-demand prices by region
Cheapest for db.r6i.8xlarge first. PostgreSQL, USD per hour.
| Region | db.r6i.8xlarge | db.r6idn.8xlarge | Difference |
|---|---|---|---|
| US East (N. Virginia)Used in summaryus-east-1 | $4.00 | $6.203 | ▲ 55% |
| US East (Ohio)us-east-2 | $4.00 | $6.203 | ▲ 55% |
| US West (Oregon)us-west-2 | $4.00 | $6.203 | ▲ 55% |
| EU (Ireland)eu-west-1 | $4.48 | $6.914 | ▲ 54% |
| Asia Pacific (Tokyo)ap-northeast-1 | $4.80 | $7.50 | ▲ 56% |
Keep exploring
Each type’s own page, and how it compares with others.
db.r6i.8xlarge
db.r6i.8xlarge prices and specsEvery size in the r6i familyCompare db.r6i.8xlarge with
db.r6idn.8xlarge
db.r6idn.8xlarge prices and specsEvery size in the r6idn familyCompare db.r6idn.8xlarge with
AWS RDS PostgreSQL prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.