db.m5.4xlargevsdb.r5.4xlarge.tpc2.mem4x

db.m5.4xlarge is 81% cheaper than db.r5.4xlarge.tpc2.mem4x on demand in US East (N. Virginia), saving $4,403.36 a month.

At a glancedb.m5.4xlargedb.r5.4xlarge.tpc2.mem4x
On-demand$1.424/hr81% less$7.456/hr
Lowest rate$0.9121/hr79% less1-yr reserved, no upfront$4.313/hr1-yr reserved, no upfront
Size16 vCPUs, 64 GiB16 vCPUs, 512 GiB

Prices in US East (N. Virginia)

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

Optiondb.m5.4xlargedb.r5.4xlarge.tpc2.mem4xdb.r5.4xlarge.tpc2.mem4x vs db.m5.4xlarge
On-demandPay by the hour$1.424$7.456▲ 424%
1-yr reservedNo upfront36% off$0.912142% off$4.313▲ 373%

Key differences

The biggest lead each one has.

Where db.m5.4xlarge leads
On-demand price$1.424 vs $7.456 per hour
81% cheaper
Where db.r5.4xlarge.tpc2.mem4x leads
Memory (GiB)512 vs 64
8× higher

Specs

23 of 25 specs differ. Those are in bold.

Compute8 of 9 differdb.m5.4xlargedb.r5.4xlarge.tpc2.mem4x
vCPUs1616
Physical cores8–
Threads per core2–
Architecture–x86_64
Processor–Intel Xeon Platinum 8175
CPU makerIntel–
Clock speed–Up to 3.1 GHz
Sustained clock3.1 GHz–
BurstableNo–
Memory1 of 1 differdb.m5.4xlargedb.r5.4xlarge.tpc2.mem4x
Memory (GiB)64512
Networking3 of 3 differdb.m5.4xlargedb.r5.4xlarge.tpc2.mem4x
Network–20 Gigabit
Network baseline5 Gbps–
Network peak10 Gbps–
Storage6 of 7 differdb.m5.4xlargedb.r5.4xlarge.tpc2.mem4x
StorageEBS OnlyEBS Only
EBS baseline bandwidth4,750 Mbps–
EBS max bandwidth4,750 Mbps–
EBS baseline throughput593.75 MB/s–
EBS max throughput593.75 MB/s–
EBS baseline IOPS18,750–
EBS max IOPS18,750–
Instance details4 of 4 differdb.m5.4xlargedb.r5.4xlarge.tpc2.mem4x
Familym5r5
CategoryGeneral purposeMemory optimized
Current generation–Yes
Normalization factor64128
Other1 of 1 differdb.m5.4xlargedb.r5.4xlarge.tpc2.mem4x
Hardware Basism5.4xlarge–

On-demand prices by region

Cheapest for db.m5.4xlarge first. PostgreSQL, USD per hour.

Regiondb.m5.4xlargedb.r5.4xlarge.tpc2.mem4xDifference
US East (N. Virginia)Used in summaryus-east-1$1.424$7.456▲ 424%
US East (Ohio)us-east-2$1.424$7.456▲ 424%
US West (Oregon)us-west-2$1.424$7.456▲ 424%
EU (Stockholm)eu-north-1$1.497$7.836▲ 423%
Canada (Central)ca-central-1$1.568$8.192▲ 422%
EU (Ireland)eu-west-1$1.576$8.256▲ 424%
US West (N. California)us-west-1$1.624$8.224▲ 406%
EU (London)eu-west-2$1.648$8.704▲ 428%
EU (Paris)eu-west-3$1.648$8.672▲ 426%
EU (Milan)eu-south-1$1.655$8.669▲ 424%
EU (Frankfurt)eu-central-1$1.696$9.024▲ 432%
AWS GovCloud (US-East)us-gov-east-1$1.70$8.976▲ 428%
AWS GovCloud (US-West)us-gov-west-1$1.70$8.976▲ 428%
Middle East (Bahrain)me-south-1$1.734$9.082▲ 424%
South America (Sao Paulo)sa-east-1$1.864$15.552▲ 734%
Africa (Cape Town)af-south-1$1.875$9.825▲ 424%
Asia Pacific (Jakarta)ap-southeast-3$1.976$8.864▲ 349%
Asia Pacific (Melbourne)ap-southeast-4$1.976$8.848▲ 348%
Asia Pacific (Seoul)ap-northeast-2$1.976$8.864▲ 349%
Asia Pacific (Singapore)ap-southeast-1$1.976$8.864▲ 349%
Asia Pacific (Sydney)ap-southeast-2$1.976$8.848▲ 348%
Asia Pacific (Tokyo)ap-northeast-1$1.976$8.864▲ 349%
Asia Pacific (Mumbai)ap-south-1$2.024$8.416▲ 316%
Asia Pacific (Osaka)ap-northeast-3$2.074$8.864▲ 327%
Asia Pacific (Hong Kong)ap-east-1$2.174$9.75▲ 349%

Keep exploring

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

db.m5.4xlargeGeneral purpose, m5 family
db.m5.4xlarge prices and specsEvery size in the m5 family

Compare db.m5.4xlarge with

db.m5d.4xlargedb.r5.4xlargedb.r5.4xlarge.tpc2.mem2xdb.r5.4xlarge.tpc2.mem3xdb.m4.4xlargedb.m6i.4xlarge
db.r5.4xlarge.tpc2.mem4xMemory optimized, r5 family
db.r5.4xlarge.tpc2.mem4x prices and specsEvery size in the r5 family

Compare db.r5.4xlarge.tpc2.mem4x with

db.r5d.4xlargedb.r5b.4xlargedb.r5b.4xlarge.tpc2.mem2xdb.r5b.4xlarge.tpc2.mem3xdb.r5b.4xlarge.tpc2.mem4xdb.r4.4xlargedb.r6i.4xlargedb.r6i.4xlarge.tpc2.mem2xdb.r6i.4xlarge.tpc2.mem3xdb.r6i.4xlarge.tpc2.mem4xdb.r6i.4xlarge.tpc2.mem8x

Pay the committed rate, with commitment protection

The best committed rate on these two is 36–42% 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.