db.m5d.4xlargevsdb.r5d.4xlarge

db.m5d.4xlarge is 27% cheaper than db.r5d.4xlarge on demand in US East (N. Virginia), saving $445.30 a month.

At a glancedb.m5d.4xlargedb.r5d.4xlarge
On-demand$1.676/hr27% less$2.286/hr
Lowest rate$1.291/hr27% less1-yr reserved, no upfront$1.76/hr1-yr reserved, no upfront
Size16 vCPUs, 64 GiB16 vCPUs, 128 GiB

Prices in US East (N. Virginia)

“Off” is the discount against each type’s own on-demand price. PostgreSQL, USD per hour.

Optiondb.m5d.4xlargedb.r5d.4xlargedb.r5d.4xlarge vs db.m5d.4xlarge
On-demandPay by the hour$1.676$2.286▲ 36%
1-yr reservedNo upfront23% off$1.29123% off$1.76▲ 36%

Key differences

The biggest lead each one has.

Where db.m5d.4xlarge leads
On-demand price$1.676 vs $2.286 per hour
27% cheaper
Where db.r5d.4xlarge leads
Memory (GiB)128 vs 64
2× higher

Specs

9 of 25 specs differ. Those are in bold.

Compute2 of 8 differdb.m5d.4xlargedb.r5d.4xlarge
vCPUs1616
Physical cores88
Threads per core22
Architecture–x86_64
Processor–Intel Xeon Platinum 8175
CPU makerIntelIntel
Sustained clock3.1 GHz3.1 GHz
BurstableNoNo
Memory1 of 1 differdb.m5d.4xlargedb.r5d.4xlarge
Memory (GiB)64128
Networking1 of 3 differdb.m5d.4xlargedb.r5d.4xlarge
Network–Up to 10 Gbps
Network baseline5 Gbps5 Gbps
Network peak10 Gbps10 Gbps
Storage1 of 8 differdb.m5d.4xlargedb.r5d.4xlarge
Storage–2 x 300 NVMe SSD
Local disks2 × 300 GB SSD2 × 300 GB SSD
EBS baseline bandwidth4,750 Mbps4,750 Mbps
EBS max bandwidth4,750 Mbps4,750 Mbps
EBS baseline throughput593.75 MB/s593.75 MB/s
EBS max throughput593.75 MB/s593.75 MB/s
EBS baseline IOPS18,75018,750
EBS max IOPS18,75018,750
Instance details3 of 4 differdb.m5d.4xlargedb.r5d.4xlarge
Familym5dr5d
Category–Memory optimized
Current generation–Yes
Normalization factor3232
Other1 of 1 differdb.m5d.4xlargedb.r5d.4xlarge
Hardware Basism5d.4xlarger5d.4xlarge

On-demand prices by region

Cheapest for db.m5d.4xlarge first. PostgreSQL, USD per hour.

Regiondb.m5d.4xlargedb.r5d.4xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$1.676$2.286▲ 36%
US East (Ohio)us-east-2$1.676$2.286▲ 36%
US West (Oregon)us-west-2$1.676$2.286▲ 36%
EU (Stockholm)eu-north-1$1.76$2.332▲ 32%
Canada (Central)ca-central-1$1.846$2.476▲ 34%
EU (Ireland)eu-west-1$1.856$2.542▲ 37%
US West (N. California)us-west-1$1.929$2.592▲ 34%
AWS GovCloud (US-East)us-gov-east-1$1.93$2.565▲ 33%
AWS GovCloud (US-West)us-gov-west-1$1.93$2.56▲ 33%
EU (Paris)eu-west-3$1.942$2.686▲ 38%
EU (London)eu-west-2$1.945$2.686▲ 38%
EU (Milan)eu-south-1$1.952$2.67▲ 37%
EU (Frankfurt)eu-central-1$2.006$2.777▲ 38%
Middle East (Bahrain)me-south-1$2.045$2.798▲ 37%
Middle East (UAE)me-central-1$2.045$2.798▲ 37%
South America (Sao Paulo)sa-east-1$2.193$4.755▲ 117%
Africa (Cape Town)af-south-1$2.211$3.013▲ 36%
Asia Pacific (Jakarta)ap-southeast-3$2.322$2.747▲ 18%
Asia Pacific (Singapore)ap-southeast-1$2.322$2.747▲ 18%
Asia Pacific (Tokyo)ap-northeast-1$2.327$2.747▲ 18%
Asia Pacific (Seoul)ap-northeast-2$2.328$2.732▲ 17%
Asia Pacific (Sydney)ap-southeast-2$2.338$2.766▲ 18%
Asia Pacific (Osaka)ap-northeast-3$2.44$2.747▲ 13%
Asia Pacific (Mumbai)ap-south-1$2.445$2.648▲ 8%
Asia Pacific (Hong Kong)ap-east-1$2.552$2.766▲ 8%
Asia Pacific (Hyderabad)ap-south-2$9.64$10.327▲ 7%

Keep exploring

Each type’s own page, and how it compares with others.

db.m5d.4xlargem5d family
db.m5d.4xlarge prices and specsEvery size in the m5d family

Compare db.m5d.4xlarge with

db.m5.4xlargedb.m6id.4xlarge
db.r5d.4xlargeMemory optimized, r5d family
db.r5d.4xlarge prices and specsEvery size in the r5d family

Compare db.r5d.4xlarge with

db.r5.4xlargedb.r5.4xlarge.tpc2.mem2xdb.r5.4xlarge.tpc2.mem3xdb.r5.4xlarge.tpc2.mem4xdb.r6id.4xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 23% below on-demand. Connect your cloud accounts to unlock greater savings with commitment protection.

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AWS RDS PostgreSQL prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.