db.m4.16xlargevsdb.r4.16xlarge
db.m4.16xlarge is 27% cheaper than db.r4.16xlarge on demand in US East (N. Virginia), saving $1,573.88 a month.
| At a glance | db.m4.16xlarge | db.r4.16xlarge |
|---|---|---|
| On-demand | $5.844/hr27% less | $8.00/hr |
| Size | 64 vCPUs, 256 GiB | 64 vCPUs, 488 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.m4.16xlarge | db.r4.16xlarge | db.r4.16xlarge vs db.m4.16xlarge |
|---|---|---|---|
| On-demandPay by the hour | $5.844 | $8.00 | ▲ 37% |
Key differences
The biggest lead each one has.
Where db.m4.16xlarge leads
On-demand price$5.844 vs $8.00 per hour
27% cheaperWhere db.r4.16xlarge leads
Memory (GiB)488 vs 256
91% higherEBS baseline bandwidth14,000 Mbps vs 10,000 Mbps
40% higherSpecs
19 of 27 specs differ. Those are in bold.
| Compute4 of 10 differ | db.m4.16xlarge | db.r4.16xlarge |
|---|---|---|
| vCPUs | 64 | 64 |
| Physical cores | 32 | 32 |
| Threads per core | 2 | 2 |
| Architecture | – | x86_64 |
| Processor | – | Intel Xeon E5-2686 v4 (Broadwell) |
| CPU maker | Intel | Intel |
| Clock speed | – | 2.3 GHz |
| Sustained clock | 2.3 GHz | 2.3 GHz |
| Processor features | – | Intel AVX, Intel AVX2, Intel Turbo |
| Burstable | No | No |
| Memory1 of 1 differ | db.m4.16xlarge | db.r4.16xlarge |
|---|---|---|
| Memory (GiB) | 256 | 488 |
| Networking1 of 3 differ | db.m4.16xlarge | db.r4.16xlarge |
|---|---|---|
| Network | – | 20 Gigabit |
| Network baseline | 25 Gbps | 25 Gbps |
| Network peak | 25 Gbps | 25 Gbps |
| Storage8 of 8 differ | db.m4.16xlarge | db.r4.16xlarge |
|---|---|---|
| Storage | – | EBS Only |
| EBS throughput | – | 12000 Mbps |
| EBS baseline bandwidth | 10,000 Mbps | 14,000 Mbps |
| EBS max bandwidth | 10,000 Mbps | 14,000 Mbps |
| EBS baseline throughput | 1,250 MB/s | 1,750 MB/s |
| EBS max throughput | 1,250 MB/s | 1,750 MB/s |
| EBS baseline IOPS | 65,000 | 75,000 |
| EBS max IOPS | 65,000 | 75,000 |
| Instance details4 of 4 differ | db.m4.16xlarge | db.r4.16xlarge |
|---|---|---|
| Family | m4 | r4 |
| Category | – | Memory optimized |
| Current generation | – | No |
| Normalization factor | 128 | 256 |
| Other1 of 1 differ | db.m4.16xlarge | db.r4.16xlarge |
|---|---|---|
| Hardware Basis | m4.16xlarge | r4.16xlarge |
On-demand prices by region
Cheapest for db.m4.16xlarge first. PostgreSQL, USD per hour.
| Region | db.m4.16xlarge | db.r4.16xlarge | Difference |
|---|---|---|---|
| US East (N. Virginia)Used in summaryus-east-1 | $5.844 | $8.00 | ▲ 37% |
| US East (Ohio)us-east-2 | $5.844 | $8.00 | ▲ 37% |
| US West (Oregon)us-west-2 | $5.844 | $8.00 | ▲ 37% |
| Canada (Central)ca-central-1 | $6.428 | $8.647 | ▲ 35% |
| EU (Ireland)eu-west-1 | $6.448 | $8.96 | ▲ 39% |
| EU (Paris)eu-west-3 | $6.496 | $9.408 | ▲ 45% |
| EU (London)eu-west-2 | $6.772 | $9.408 | ▲ 39% |
| US West (N. California)us-west-1 | $6.82 | $8.96 | ▲ 31% |
| EU (Frankfurt)eu-central-1 | $6.96 | $9.76 | ▲ 40% |
| AWS GovCloud (US-West)us-gov-west-1 | $6.976 | $9.632 | ▲ 38% |
| South America (Sao Paulo)sa-east-1 | $7.632 | $16.752 | ▲ 119% |
| Asia Pacific (Seoul)ap-northeast-2 | $8.064 | $9.60 | ▲ 19% |
| Asia Pacific (Sydney)ap-southeast-2 | $8.212 | $9.60 | ▲ 17% |
| Asia Pacific (Mumbai)ap-south-1 | $8.24 | $9.12 | ▲ 11% |
| Asia Pacific (Osaka)ap-northeast-3 | $8.488 | $9.60 | ▲ 13% |
| Asia Pacific (Tokyo)ap-northeast-1 | $8.488 | $9.60 | ▲ 13% |
| Asia Pacific (Singapore)ap-southeast-1 | $8.676 | $9.60 | ▲ 11% |
Keep exploring
Each type’s own page, and how it compares with others.
AWS RDS PostgreSQL prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.