db.r4.2xlargevsdb.r5.2xlarge.tpc2.mem8x

db.r4.2xlarge is 87% cheaper than db.r5.2xlarge.tpc2.mem8x on demand in US East (N. Virginia), saving $4,712.88 a month.

At a glancedb.r4.2xlargedb.r5.2xlarge.tpc2.mem8x
On-demand$1.00/hr87% less$7.456/hr
Size8 vCPUs, 61 GiB8 vCPUs, 512 GiB

Prices in US East (N. Virginia)

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

Optiondb.r4.2xlargedb.r5.2xlarge.tpc2.mem8xdb.r5.2xlarge.tpc2.mem8x vs db.r4.2xlarge
On-demandPay by the hour$1.00$7.456▲ 646%
1-yr reservedNo upfront—42% off$4.313—

Key differences

The biggest lead each one has.

Where db.r4.2xlarge leads
On-demand price$1.00 vs $7.456 per hour
87% cheaper
Where db.r5.2xlarge.tpc2.mem8x leads
Memory (GiB)512 vs 61
8.4× higher

Specs

24 of 25 specs differ. Those are in bold.

Compute8 of 9 differdb.r4.2xlargedb.r5.2xlarge.tpc2.mem8x
vCPUs88
Physical cores4–
Threads per core2–
Architecture–x86_64
Processor–Intel Xeon Platinum 8175
CPU makerIntel–
Clock speed–Up to 3.1 GHz
Sustained clock2.3 GHz–
BurstableNo–
Memory1 of 1 differdb.r4.2xlargedb.r5.2xlarge.tpc2.mem8x
Memory (GiB)61512
Networking3 of 3 differdb.r4.2xlargedb.r5.2xlarge.tpc2.mem8x
Network–20 Gigabit
Network baseline2.5 Gbps–
Network peak10 Gbps–
Storage7 of 7 differdb.r4.2xlargedb.r5.2xlarge.tpc2.mem8x
Storage–EBS Only
EBS baseline bandwidth1,700 Mbps–
EBS max bandwidth1,700 Mbps–
EBS baseline throughput212.5 MB/s–
EBS max throughput212.5 MB/s–
EBS baseline IOPS12,000–
EBS max IOPS12,000–
Instance details4 of 4 differdb.r4.2xlargedb.r5.2xlarge.tpc2.mem8x
Familyr4r5
Category–Memory optimized
Current generation–Yes
Normalization factor16128
Other1 of 1 differdb.r4.2xlargedb.r5.2xlarge.tpc2.mem8x
Hardware Basisr4.2xlarge–

On-demand prices by region

Cheapest for db.r4.2xlarge first. PostgreSQL, USD per hour.

Regiondb.r4.2xlargedb.r5.2xlarge.tpc2.mem8xDifference
US East (N. Virginia)Used in summaryus-east-1$1.00$7.456▲ 646%
US East (Ohio)us-east-2$1.00$7.456▲ 646%
US West (Oregon)us-west-2$1.00$7.456▲ 646%
Canada (Central)ca-central-1$1.081$8.192▲ 658%
EU (Ireland)eu-west-1$1.12$8.256▲ 637%
US West (N. California)us-west-1$1.12$8.224▲ 634%
Asia Pacific (Mumbai)ap-south-1$1.14$8.416▲ 638%
EU (London)eu-west-2$1.176$8.704▲ 640%
EU (Paris)eu-west-3$1.176$8.672▲ 637%
Asia Pacific (Osaka)ap-northeast-3$1.20$8.864▲ 639%
Asia Pacific (Seoul)ap-northeast-2$1.20$8.864▲ 639%
Asia Pacific (Singapore)ap-southeast-1$1.20$8.864▲ 639%
Asia Pacific (Sydney)ap-southeast-2$1.20$8.848▲ 637%
Asia Pacific (Tokyo)ap-northeast-1$1.20$8.864▲ 639%
AWS GovCloud (US-East)us-gov-east-1$1.204$8.976▲ 646%
AWS GovCloud (US-West)us-gov-west-1$1.204$8.976▲ 646%
EU (Frankfurt)eu-central-1$1.22$9.024▲ 640%
South America (Sao Paulo)sa-east-1$2.094$15.552▲ 643%

Keep exploring

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

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