db.r5.xlargevsdb.r6i.xlarge

db.r5.xlarge and db.r6i.xlarge cost the same on demand in US East (N. Virginia), $0.5 per hour.

At a glancedb.r5.xlargedb.r6i.xlarge
On-demand$0.5/hr$0.5/hr
Lowest rate$0.2888/hr1-yr reserved, no upfront$0.2888/hr1-yr reserved, no upfront
Size4 vCPUs, 32 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.r5.xlargedb.r6i.xlargedb.r6i.xlarge vs db.r5.xlarge
On-demandPay by the hour$0.5$0.5Same
1-yr reservedNo upfront42% off$0.288842% off$0.2888Same

Key differences

The biggest lead each one has.

Where db.r5.xlarge leads

No clear lead on the measures we compare.

Where db.r6i.xlarge leads
EBS max IOPS40,000 vs 18,750
2.1× higher
Network peak12.5 Gbps vs 10 Gbps
25% higher
Sustained clock3.5 GHz vs 3.1 GHz
13% higher

Specs

11 of 20 specs differ. Those are in bold.

Compute1 of 6 differdb.r5.xlargedb.r6i.xlarge
vCPUs44
Physical cores22
Threads per core22
CPU makerIntelIntel
Sustained clock3.1 GHz3.5 GHz
BurstableNoNo
MemoryAll 1 matchdb.r5.xlargedb.r6i.xlarge
Memory (GiB)3232
Networking2 of 2 differdb.r5.xlargedb.r6i.xlarge
Network baseline1.25 Gbps1.562 Gbps
Network peak10 Gbps12.5 Gbps
Storage5 of 7 differdb.r5.xlargedb.r6i.xlarge
StorageEBS OnlyEBS Only
EBS baseline bandwidth1,150 Mbps1,250 Mbps
EBS max bandwidth4,750 Mbps10,000 Mbps
EBS baseline throughput143.75 MB/s156.25 MB/s
EBS max throughput593.75 MB/s1,250 MB/s
EBS baseline IOPS6,0006,000
EBS max IOPS18,75040,000
Instance details2 of 3 differdb.r5.xlargedb.r6i.xlarge
Familyr5r6i
CategoryMemory optimizedMemory optimized
Normalization factor16–
Other1 of 1 differdb.r5.xlargedb.r6i.xlarge
Hardware Basisr5.xlarger6i.xlarge

On-demand prices by region

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

Regiondb.r5.xlargedb.r6i.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
EU (Stockholm)eu-north-1$0.515$0.514Same
Canada (Central)ca-central-1$0.5405$0.541Same
EU (Ireland)eu-west-1$0.56$0.56Same
Europe (Spain)eu-south-2$0.56$0.832▲ 49%
US West (N. California)us-west-1$0.56$0.56Same
Asia Pacific (Hyderabad)ap-south-2$0.57$0.858▲ 51%
Asia Pacific (Mumbai)ap-south-1$0.57$0.57Same
EU (London)eu-west-2$0.588$0.588Same
EU (Milan)eu-south-1$0.588$0.588Same
EU (Paris)eu-west-3$0.588$0.588Same
Israel (Tel Aviv)il-central-1$0.59$0.59Same
Asia Pacific (Jakarta)ap-southeast-3$0.6$0.91▲ 52%
Asia Pacific (Melbourne)ap-southeast-4$0.6$0.91▲ 52%
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$0.6$0.7▲ 17%
AWS GovCloud (US-West)us-gov-west-1$0.6$0.7▲ 17%
EU (Frankfurt)eu-central-1$0.61$0.61Same
Middle East (Bahrain)me-south-1$0.616$0.616Same
Middle East (UAE)me-central-1$0.616$0.915▲ 49%
Canada West (Calgary)ca-west-1$0.64$0.541▼ 15%
Asia Pacific (Hong Kong)ap-east-1$0.66$0.66Same
Africa (Cape Town)af-south-1$0.666$0.666Same
Europe (Zurich)eu-central-2$0.672$1.001▲ 49%
South America (Sao Paulo)sa-east-1$1.047$1.048Same

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.r5b.xlarge.tpc2.mem4xdb.r4.xlargedb.r6i.xlarge.tpc2.mem2xdb.r6i.xlarge.tpc2.mem4x
db.r6i.xlargeMemory optimized, r6i family
db.r6i.xlarge prices and specsEvery size in the r6i family

Compare db.r6i.xlarge with

db.m6i.xlargedb.r6g.xlargedb.r6id.xlargedb.r6idn.xlargedb.r6in.xlargedb.r5.xlarge.tpc2.mem2xdb.r5.xlarge.tpc2.mem4xdb.r7i.xlargedb.r7i.xlarge.tpc2.mem2xdb.r7i.xlarge.tpc2.mem4x

Pay the committed rate, with commitment protection

The best committed rate on these two is 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.