db.r5.xlargevsdb.r5b.xlarge.tpc2.mem4x

db.r5.xlarge is 77% cheaper than db.r5b.xlarge.tpc2.mem4x on demand in US East (N. Virginia), saving $1,244.65 a month.

At a glancedb.r5.xlargedb.r5b.xlarge.tpc2.mem4x
On-demand$0.5/hr77% less$2.205/hr

Prices in US East (N. Virginia)

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

Optiondb.r5.xlargedb.r5b.xlarge.tpc2.mem4xdb.r5b.xlarge.tpc2.mem4x vs db.r5.xlarge
On-demandPay by the hour$0.5$2.205▲ 341%
1-yr reservedNo upfront42% off$0.2888——

Key differences

The biggest lead each one has.

Where db.r5.xlarge leads
On-demand price$0.5 vs $2.205 per hour
77% cheaper
Where db.r5b.xlarge.tpc2.mem4x leads

No clear lead on the measures we compare.

Specs

20 of 20 specs differ. Those are in bold.

Compute6 of 6 differdb.r5.xlargedb.r5b.xlarge.tpc2.mem4x
vCPUs4–
Physical cores2–
Threads per core2–
CPU makerIntel–
Sustained clock3.1 GHz–
BurstableNo–
Memory1 of 1 differdb.r5.xlargedb.r5b.xlarge.tpc2.mem4x
Memory (GiB)32–
Networking2 of 2 differdb.r5.xlargedb.r5b.xlarge.tpc2.mem4x
Network baseline1.25 Gbps–
Network peak10 Gbps–
Storage7 of 7 differdb.r5.xlargedb.r5b.xlarge.tpc2.mem4x
StorageEBS Only–
EBS baseline bandwidth1,150 Mbps–
EBS max bandwidth4,750 Mbps–
EBS baseline throughput143.75 MB/s–
EBS max throughput593.75 MB/s–
EBS baseline IOPS6,000–
EBS max IOPS18,750–
Instance details3 of 3 differdb.r5.xlargedb.r5b.xlarge.tpc2.mem4x
Familyr5r5b
CategoryMemory optimized–
Normalization factor1632
Other1 of 1 differdb.r5.xlargedb.r5b.xlarge.tpc2.mem4x
Hardware Basisr5.xlarge–

On-demand prices by region

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

Regiondb.r5.xlargedb.r5b.xlarge.tpc2.mem4xDifference
US East (N. Virginia)Used in summaryus-east-1$0.5$2.205▲ 341%
US East (Ohio)us-east-2$0.5$2.205▲ 341%
US West (Oregon)us-west-2$0.5$2.205▲ 341%
EU (Stockholm)eu-north-1$0.515$2.338▲ 354%
Canada (Central)ca-central-1$0.5405$2.412▲ 346%
EU (Ireland)eu-west-1$0.56$2.472▲ 341%
EU (London)eu-west-2$0.588$2.59▲ 340%
EU (Milan)eu-south-1$0.588$2.59▲ 340%
Asia Pacific (Seoul)ap-northeast-2$0.6$2.634▲ 339%
Asia Pacific (Singapore)ap-southeast-1$0.6$2.634▲ 339%
Asia Pacific (Sydney)ap-southeast-2$0.6$2.679▲ 347%
Asia Pacific (Tokyo)ap-northeast-1$0.6$2.679▲ 347%
EU (Frankfurt)eu-central-1$0.61$2.634▲ 332%
South America (Sao Paulo)sa-east-1$1.047$3.508▲ 235%

Keep exploring

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

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.r4.xlargedb.r6i.xlargedb.r6i.xlarge.tpc2.mem2xdb.r6i.xlarge.tpc2.mem4x
db.r5b.xlarge.tpc2.mem4xr5b family
db.r5b.xlarge.tpc2.mem4x prices and specsEvery size in the r5b family

Compare db.r5b.xlarge.tpc2.mem4x with

db.r5.xlarge.tpc2.mem2xdb.r5.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.