db.r4.largevsdb.r5.large.tpc1.mem2x

db.r4.large is 46% cheaper than db.r5.large.tpc1.mem2x on demand in US East (N. Virginia), saving $157.68 a month.

At a glancedb.r4.largedb.r5.large.tpc1.mem2x
On-demand$0.25/hr46% less$0.466/hr
Size2 vCPUs, 15.25 GiB2 vCPUs, 32 GiB
ProcessorIntel Xeon E5-2686 v4 (Broadwell)Intel Xeon Platinum 8175
Architecturex86_64x86_64

Prices in US East (N. Virginia)

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

Optiondb.r4.largedb.r5.large.tpc1.mem2xdb.r5.large.tpc1.mem2x vs db.r4.large
On-demandPay by the hour$0.25$0.466▲ 86%
1-yr reservedNo upfront—42% off$0.2695—

Key differences

The biggest lead each one has.

Where db.r4.large leads
On-demand price$0.25 vs $0.466 per hour
46% cheaper
Where db.r5.large.tpc1.mem2x leads
Memory (GiB)32 vs 15.25
2.1× higher
Clock speedUp to 3.1 GHz vs 2.3 GHz
35% higher

Specs

22 of 27 specs differ. Those are in bold.

Compute8 of 10 differdb.r4.largedb.r5.large.tpc1.mem2x
vCPUs22
Physical cores1–
Threads per core2–
Architecturex86_64x86_64
ProcessorIntel Xeon E5-2686 v4 (Broadwell)Intel Xeon Platinum 8175
CPU makerIntel–
Clock speed2.3 GHzUp to 3.1 GHz
Sustained clock2.3 GHz–
Processor featuresIntel AVX, Intel AVX2, Intel Turbo–
BurstableNo–
Memory1 of 1 differdb.r4.largedb.r5.large.tpc1.mem2x
Memory (GiB)15.2532
Networking2 of 3 differdb.r4.largedb.r5.large.tpc1.mem2x
NetworkUp to 10 GigabitUp to 10 Gigabit
Network baseline0.75 Gbps–
Network peak10 Gbps–
Storage7 of 8 differdb.r4.largedb.r5.large.tpc1.mem2x
StorageEBS OnlyEBS Only
EBS throughput400 Mbps–
EBS baseline bandwidth425 Mbps–
EBS max bandwidth425 Mbps–
EBS baseline throughput53.125 MB/s–
EBS max throughput53.125 MB/s–
EBS baseline IOPS3,000–
EBS max IOPS3,000–
Instance details3 of 4 differdb.r4.largedb.r5.large.tpc1.mem2x
Familyr4r5
CategoryMemory optimizedMemory optimized
Current generationNoYes
Normalization factor416
Other1 of 1 differdb.r4.largedb.r5.large.tpc1.mem2x
Hardware Basisr4.large–

On-demand prices by region

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

Regiondb.r4.largedb.r5.large.tpc1.mem2xDifference
US East (N. Virginia)Used in summaryus-east-1$0.25$0.466▲ 86%
US East (Ohio)us-east-2$0.25$0.466▲ 86%
US West (Oregon)us-west-2$0.25$0.466▲ 86%
Canada (Central)ca-central-1$0.2702$0.512▲ 89%
EU (Ireland)eu-west-1$0.28$0.516▲ 84%
US West (N. California)us-west-1$0.28$0.514▲ 84%
Asia Pacific (Mumbai)ap-south-1$0.285$0.526▲ 85%
Asia Pacific (Melbourne)ap-southeast-4$0.2852$0.553▲ 94%
EU (London)eu-west-2$0.294$0.544▲ 85%
EU (Paris)eu-west-3$0.294$0.542▲ 84%
Asia Pacific (Osaka)ap-northeast-3$0.3$0.554▲ 85%
Asia Pacific (Seoul)ap-northeast-2$0.3$0.554▲ 85%
Asia Pacific (Singapore)ap-southeast-1$0.3$0.554▲ 85%
Asia Pacific (Sydney)ap-southeast-2$0.3$0.553▲ 84%
Asia Pacific (Tokyo)ap-northeast-1$0.3$0.554▲ 85%
AWS GovCloud (US-East)us-gov-east-1$0.301$0.561▲ 86%
AWS GovCloud (US-West)us-gov-west-1$0.301$0.561▲ 86%
EU (Frankfurt)eu-central-1$0.305$0.564▲ 85%
South America (Sao Paulo)sa-east-1$0.5235$0.972▲ 86%

Keep exploring

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

db.r4.largeMemory optimized, r4 family
db.r4.large prices and specsEvery size in the r4 family

Compare db.r4.large with

db.r5.large
db.r5.large.tpc1.mem2xMemory optimized, r5 family
db.r5.large.tpc1.mem2x prices and specsEvery size in the r5 family

Compare db.r5.large.tpc1.mem2x with

db.m5.largedb.r5d.largedb.r5b.largedb.r5b.large.tpc1.mem2xdb.r6i.largedb.r6i.large.tpc1.mem2x

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.

Connect AWS account

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