db.r4.xlargevsdb.r5.xlarge

db.r4.xlarge and db.r5.xlarge cost the same on demand in US East (N. Virginia), $0.5 per hour.

At a glancedb.r4.xlargedb.r5.xlarge
On-demand$0.5/hr$0.5/hr
Size4 vCPUs, 30.5 GiB4 vCPUs, 32 GiB

Prices in US East (N. Virginia)

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

Optiondb.r4.xlargedb.r5.xlargedb.r5.xlarge vs db.r4.xlarge
On-demandPay by the hour$0.5$0.5Same
1-yr reservedNo upfront—42% off$0.2888—

Key differences

The biggest lead each one has.

Where db.r4.xlarge leads

No clear lead on the measures we compare.

Where db.r5.xlarge leads
EBS max bandwidth4,750 Mbps vs 850 Mbps
5.6× higher
Sustained clock3.1 GHz vs 2.3 GHz
35% higher
Memory (GiB)32 vs 30.5
5% higher

Specs

12 of 20 specs differ. Those are in bold.

Compute1 of 6 differdb.r4.xlargedb.r5.xlarge
vCPUs44
Physical cores22
Threads per core22
CPU makerIntelIntel
Sustained clock2.3 GHz3.1 GHz
BurstableNoNo
Memory1 of 1 differdb.r4.xlargedb.r5.xlarge
Memory (GiB)30.532
NetworkingAll 2 matchdb.r4.xlargedb.r5.xlarge
Network baseline1.25 Gbps1.25 Gbps
Network peak10 Gbps10 Gbps
Storage6 of 7 differdb.r4.xlargedb.r5.xlarge
Storage–EBS Only
EBS baseline bandwidth850 Mbps1,150 Mbps
EBS max bandwidth850 Mbps4,750 Mbps
EBS baseline throughput106.25 MB/s143.75 MB/s
EBS max throughput106.25 MB/s593.75 MB/s
EBS baseline IOPS6,0006,000
EBS max IOPS6,00018,750
Instance details3 of 3 differdb.r4.xlargedb.r5.xlarge
Familyr4r5
Category–Memory optimized
Normalization factor816
Other1 of 1 differdb.r4.xlargedb.r5.xlarge
Hardware Basisr4.xlarger5.xlarge

On-demand prices by region

Cheapest for db.r4.xlarge first. PostgreSQL, USD per hour.

Regiondb.r4.xlargedb.r5.xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$0.5$0.5Same
US East (Ohio)us-east-2$0.5$0.5Same
US West (Oregon)us-west-2$0.5$0.5Same
Canada (Central)ca-central-1$0.5405$0.5405Same
EU (Ireland)eu-west-1$0.56$0.56Same
US West (N. California)us-west-1$0.56$0.56Same
Asia Pacific (Mumbai)ap-south-1$0.57$0.57Same
EU (London)eu-west-2$0.588$0.588Same
EU (Paris)eu-west-3$0.588$0.588Same
Asia Pacific (Osaka)ap-northeast-3$0.6$0.6Same
Asia Pacific (Seoul)ap-northeast-2$0.6$0.6Same
Asia Pacific (Singapore)ap-southeast-1$0.6$0.6Same
Asia Pacific (Sydney)ap-southeast-2$0.6$0.6Same
Asia Pacific (Tokyo)ap-northeast-1$0.6$0.6Same
AWS GovCloud (US-East)us-gov-east-1$0.602$0.6Same
AWS GovCloud (US-West)us-gov-west-1$0.602$0.6Same
EU (Frankfurt)eu-central-1$0.61$0.61Same
South America (Sao Paulo)sa-east-1$1.047$1.047Same

Keep exploring

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

db.r4.xlarger4 family
db.r4.xlarge prices and specsEvery size in the r4 family

Compare db.r4.xlarge with

db.m4.xlargedb.r3.xlargedb.r5.xlarge.tpc2.mem2xdb.r5.xlarge.tpc2.mem4x
db.r5.xlargeMemory optimized, r5 family
db.r5.xlarge prices and specsEvery size in the r5 family

Compare db.r5.xlarge with

db.m5.xlargedb.r5d.xlargedb.r5b.xlargedb.r5b.xlarge.tpc2.mem2xdb.r5b.xlarge.tpc2.mem4xdb.r6i.xlargedb.r6i.xlarge.tpc2.mem2xdb.r6i.xlarge.tpc2.mem4x

Pay the committed rate, with commitment protection

The best committed rate on these two is 0–42% 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.