db.r5.largevsdb.r5b.large.tpc1.mem2x

db.r5.large is 55% cheaper than db.r5b.large.tpc1.mem2x on demand in US East (N. Virginia), saving $219.73 a month.

At a glancedb.r5.largedb.r5b.large.tpc1.mem2x
On-demand$0.25/hr55% less$0.551/hr
Size2 vCPUs, 16 GiB2 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.r5.largedb.r5b.large.tpc1.mem2xdb.r5b.large.tpc1.mem2x vs db.r5.large
On-demandPay by the hour$0.25$0.551▲ 120%
1-yr reservedNo upfront42% off$0.1444——

Key differences

The biggest lead each one has.

Where db.r5.large leads
On-demand price$0.25 vs $0.551 per hour
55% cheaper
Where db.r5b.large.tpc1.mem2x leads
Memory (GiB)32 vs 16
2× higher

Specs

22 of 25 specs differ. Those are in bold.

Compute8 of 9 differdb.r5.largedb.r5b.large.tpc1.mem2x
vCPUs22
Physical cores1–
Threads per core2–
Architecture–x86_64
Processor–Intel Xeon Platinum 8000 series
CPU makerIntel–
Clock speed–Up to 3.1 GHz
Sustained clock3.1 GHz–
BurstableNo–
Memory1 of 1 differdb.r5.largedb.r5b.large.tpc1.mem2x
Memory (GiB)1632
Networking3 of 3 differdb.r5.largedb.r5b.large.tpc1.mem2x
Network–Up to 10 Gigabit
Network baseline0.75 Gbps–
Network peak10 Gbps–
Storage6 of 7 differdb.r5.largedb.r5b.large.tpc1.mem2x
StorageEBS OnlyEBS Only
EBS baseline bandwidth650 Mbps–
EBS max bandwidth4,750 Mbps–
EBS baseline throughput81.25 MB/s–
EBS max throughput593.75 MB/s–
EBS baseline IOPS3,600–
EBS max IOPS18,750–
Instance details3 of 4 differdb.r5.largedb.r5b.large.tpc1.mem2x
Familyr5r5b
CategoryMemory optimizedMemory optimized
Current generation–Yes
Normalization factor816
Other1 of 1 differdb.r5.largedb.r5b.large.tpc1.mem2x
Hardware Basisr5.large–

On-demand prices by region

Cheapest for db.r5.large first. PostgreSQL, USD per hour.

Regiondb.r5.largedb.r5b.large.tpc1.mem2xDifference
US East (N. Virginia)Used in summaryus-east-1$0.25$0.551▲ 120%
US East (Ohio)us-east-2$0.25$0.551▲ 120%
US West (Oregon)us-west-2$0.25$0.551▲ 120%
EU (Stockholm)eu-north-1$0.257$0.584▲ 127%
Canada (Central)ca-central-1$0.2703$0.603▲ 123%
EU (Ireland)eu-west-1$0.28$0.618▲ 121%
EU (London)eu-west-2$0.294$0.648▲ 120%
EU (Milan)eu-south-1$0.294$0.648▲ 120%
Asia Pacific (Seoul)ap-northeast-2$0.3$0.659▲ 120%
Asia Pacific (Singapore)ap-southeast-1$0.3$0.659▲ 120%
Asia Pacific (Sydney)ap-southeast-2$0.3$0.67▲ 123%
Asia Pacific (Tokyo)ap-northeast-1$0.3$0.67▲ 123%
EU (Frankfurt)eu-central-1$0.305$0.659▲ 116%
South America (Sao Paulo)sa-east-1$0.524$0.877▲ 67%

Keep exploring

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

db.r5.largeMemory optimized, r5 family
db.r5.large prices and specsEvery size in the r5 family

Compare db.r5.large with

db.m5.largedb.r5d.largedb.r5b.largedb.r4.largedb.r6i.largedb.r6i.large.tpc1.mem2x
db.r5b.large.tpc1.mem2xMemory optimized, r5b family
db.r5b.large.tpc1.mem2x prices and specsEvery size in the r5b family

Compare db.r5b.large.tpc1.mem2x with

db.r5.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.

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