db.r4.4xlargevsdb.r5.4xlarge

db.r4.4xlarge and db.r5.4xlarge cost the same on demand in US East (N. Virginia), $2.00 per hour.

At a glancedb.r4.4xlargedb.r5.4xlarge
On-demand$2.00/hr$2.00/hr
Size16 vCPUs, 122 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.r4.4xlargedb.r5.4xlargedb.r5.4xlarge vs db.r4.4xlarge
On-demandPay by the hour$2.00$2.00Same
1-yr reservedNo upfront—42% off$1.155—

Key differences

The biggest lead each one has.

Where db.r4.4xlarge leads

No clear lead on the measures we compare.

Where db.r5.4xlarge leads
EBS baseline bandwidth4,750 Mbps vs 3,500 Mbps
36% higher
Sustained clock3.1 GHz vs 2.3 GHz
35% higher
Memory (GiB)128 vs 122
5% higher

Specs

11 of 20 specs differ. Those are in bold.

Compute1 of 6 differdb.r4.4xlargedb.r5.4xlarge
vCPUs1616
Physical cores88
Threads per core22
CPU makerIntelIntel
Sustained clock2.3 GHz3.1 GHz
BurstableNoNo
Memory1 of 1 differdb.r4.4xlargedb.r5.4xlarge
Memory (GiB)122128
NetworkingAll 2 matchdb.r4.4xlargedb.r5.4xlarge
Network baseline5 Gbps5 Gbps
Network peak10 Gbps10 Gbps
Storage5 of 7 differdb.r4.4xlargedb.r5.4xlarge
Storage–EBS Only
EBS baseline bandwidth3,500 Mbps4,750 Mbps
EBS max bandwidth3,500 Mbps4,750 Mbps
EBS baseline throughput437.5 MB/s593.75 MB/s
EBS max throughput437.5 MB/s593.75 MB/s
EBS baseline IOPS18,75018,750
EBS max IOPS18,75018,750
Instance details3 of 3 differdb.r4.4xlargedb.r5.4xlarge
Familyr4r5
Category–Memory optimized
Normalization factor–32
Other1 of 1 differdb.r4.4xlargedb.r5.4xlarge
Hardware Basisr4.4xlarger5.4xlarge

On-demand prices by region

Cheapest for db.r4.4xlarge first. PostgreSQL, USD per hour.

Regiondb.r4.4xlargedb.r5.4xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$2.00$2.00Same
US East (Ohio)us-east-2$2.00$2.00Same
US West (Oregon)us-west-2$2.00$2.00Same
Canada (Central)ca-central-1$2.162$2.162Same
EU (Ireland)eu-west-1$2.24$2.24Same
US West (N. California)us-west-1$2.24$2.24Same
Asia Pacific (Mumbai)ap-south-1$2.28$2.28Same
EU (London)eu-west-2$2.352$2.352Same
EU (Paris)eu-west-3$2.352$2.352Same
Asia Pacific (Osaka)ap-northeast-3$2.40$2.40Same
Asia Pacific (Seoul)ap-northeast-2$2.40$2.40Same
Asia Pacific (Singapore)ap-southeast-1$2.40$2.40Same
Asia Pacific (Sydney)ap-southeast-2$2.40$2.40Same
Asia Pacific (Tokyo)ap-northeast-1$2.40$2.40Same
AWS GovCloud (US-East)us-gov-east-1$2.408$2.41Same
AWS GovCloud (US-West)us-gov-west-1$2.408$2.41Same
EU (Frankfurt)eu-central-1$2.44$2.44Same
South America (Sao Paulo)sa-east-1$4.188$4.188Same

Keep exploring

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

db.r4.4xlarger4 family
db.r4.4xlarge prices and specsEvery size in the r4 family

Compare db.r4.4xlarge with

db.m4.4xlargedb.r3.4xlargedb.r5.4xlarge.tpc2.mem2xdb.r5.4xlarge.tpc2.mem3xdb.r5.4xlarge.tpc2.mem4x
db.r5.4xlargeMemory optimized, r5 family
db.r5.4xlarge prices and specsEvery size in the r5 family

Compare db.r5.4xlarge with

db.m5.4xlargedb.r5d.4xlargedb.r5b.4xlargedb.r5b.4xlarge.tpc2.mem2xdb.r5b.4xlarge.tpc2.mem3xdb.r5b.4xlarge.tpc2.mem4xdb.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 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.