db.r8g.8xlargevsdb.r8gd.8xlarge
db.r8g.8xlarge is 12% cheaper than db.r8gd.8xlarge on demand in US East (N. Virginia), saving $397.12 a month.
| At a glance | db.r8g.8xlarge | db.r8gd.8xlarge |
|---|---|---|
| On-demand | $3.824/hr12% less | $4.368/hr |
| Lowest rate | $3.059/hr12% less1-yr savings plan, hourly commitment | $3.494/hr1-yr savings plan, hourly commitment |
| Size | 32 vCPUs, 256 GiB | 32 vCPUs, 256 GiB |
| Architecture | arm64 | arm64 |
Prices in US East (N. Virginia)
“Off” is the discount against each type’s own on-demand price. PostgreSQL, USD per hour.
| Option | db.r8g.8xlarge | db.r8gd.8xlarge | db.r8gd.8xlarge vs db.r8g.8xlarge |
|---|---|---|---|
| On-demandPay by the hour | $3.824 | $4.368 | ▲ 14% |
| 1-yr reservedNo upfront | 33% off$2.562 | — | — |
| 3-yr reservedNo upfront | 53% off$1.797 | — | — |
| 1-yr savings planHourly commitment | 20% off$3.059 | 20% off$3.494 | ▲ 14% |
Key differences
The biggest lead each one has.
Where db.r8g.8xlarge leads
On-demand price$3.824 vs $4.368 per hour
12% cheaperWhere db.r8gd.8xlarge leads
No clear lead on the measures we compare.
Specs
9 of 25 specs differ. Those are in bold.
| Compute1 of 8 differ | db.r8g.8xlarge | db.r8gd.8xlarge |
|---|---|---|
| vCPUs | 32 | 32 |
| Physical cores | 32 | 32 |
| Threads per core | 1 | 1 |
| Architecture | arm64 | arm64 |
| Processor | AWS Graviton4 | – |
| CPU maker | AWS | AWS |
| Sustained clock | 2.8 GHz | 2.8 GHz |
| Burstable | No | No |
| MemoryAll 1 match | db.r8g.8xlarge | db.r8gd.8xlarge |
|---|---|---|
| Memory (GiB) | 256 | 256 |
| Networking1 of 3 differ | db.r8g.8xlarge | db.r8gd.8xlarge |
|---|---|---|
| Network | 15 Gigabit | – |
| Network baseline | 15 Gbps | 15 Gbps |
| Network peak | 15 Gbps | 15 Gbps |
| Storage2 of 8 differ | db.r8g.8xlarge | db.r8gd.8xlarge |
|---|---|---|
| Storage | Aurora IO Optimization Mode | – |
| Local disks | – | 1 × 1,900 GB SSD |
| EBS baseline bandwidth | 10,000 Mbps | 10,000 Mbps |
| EBS max bandwidth | 10,000 Mbps | 10,000 Mbps |
| EBS baseline throughput | 1,250 MB/s | 1,250 MB/s |
| EBS max throughput | 1,250 MB/s | 1,250 MB/s |
| EBS baseline IOPS | 40,000 | 40,000 |
| EBS max IOPS | 40,000 | 40,000 |
| Instance details4 of 4 differ | db.r8g.8xlarge | db.r8gd.8xlarge |
|---|---|---|
| Family | r8g | r8gd |
| Category | Memory optimized | – |
| Current generation | Yes | – |
| Normalization factor | 83.2 | 64 |
| Other1 of 1 differ | db.r8g.8xlarge | db.r8gd.8xlarge |
|---|---|---|
| Hardware Basis | r8g.8xlarge | r8gd.8xlarge |
On-demand prices by region
Cheapest for db.r8g.8xlarge first. PostgreSQL, USD per hour.
| Region | db.r8g.8xlarge | db.r8gd.8xlarge | Difference |
|---|---|---|---|
| US East (N. Virginia)Used in summaryus-east-1 | $3.824 | $4.368 | ▲ 14% |
| US East (Ohio)us-east-2 | $3.824 | $4.368 | ▲ 14% |
| US West (Oregon)us-west-2 | $3.824 | $4.368 | ▲ 14% |
| Asia Pacific (Malaysia)ap-southeast-5 | $3.904 | $4.464 | ▲ 14% |
| Canada (Central)ca-central-1 | $4.131 | $4.723 | ▲ 14% |
| EU (Ireland)eu-west-1 | $4.288 | $4.867 | ▲ 14% |
| Europe (Spain)eu-south-2 | $4.288 | $5.122 | ▲ 19% |
| US West (N. California)us-west-1 | $4.288 | $4.986 | ▲ 16% |
| EU (London)eu-west-2 | $4.488 | $5.125 | ▲ 14% |
| Asia Pacific (Seoul)ap-northeast-2 | $4.59 | $5.21 | ▲ 13% |
| Asia Pacific (Jakarta)ap-southeast-3 | $4.592 | $5.256 | ▲ 14% |
| Asia Pacific (Sydney)ap-southeast-2 | $4.592 | $5.29 | ▲ 15% |
| Asia Pacific (Tokyo)ap-northeast-1 | $4.592 | $5.256 | ▲ 14% |
| EU (Frankfurt)eu-central-1 | $4.656 | $5.285 | ▲ 14% |
| Asia Pacific (Hong Kong)ap-east-1 | $5.05 | $5.777 | ▲ 14% |
| South America (Sao Paulo)sa-east-1 | $6.08 | $6.945 | ▲ 14% |
Keep exploring
Each type’s own page, and how it compares with others.
db.r8g.8xlarge
db.r8g.8xlarge prices and specsEvery size in the r8g familyCompare db.r8g.8xlarge with
db.r8gd.8xlarge
db.r8gd.8xlarge prices and specsEvery size in the r8gd familyCompare db.r8gd.8xlarge with
AWS RDS PostgreSQL prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.