db.m6in.4xlargevsdb.r6in.4xlarge

db.m6in.4xlarge is 25% cheaper than db.r6in.4xlarge on demand in US East (N. Virginia), saving $511.73 a month.

At a glancedb.m6in.4xlargedb.r6in.4xlarge
On-demand$2.066/hr25% less$2.767/hr
Lowest rate$1.591/hr25% less1-yr reserved, no upfront$2.131/hr1-yr reserved, no upfront
Size16 vCPUs, 64 GiB16 vCPUs, 128 GiB

Prices in US East (N. Virginia)

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

Optiondb.m6in.4xlargedb.r6in.4xlargedb.r6in.4xlarge vs db.m6in.4xlarge
On-demandPay by the hour$2.066$2.767▲ 34%
1-yr reservedNo upfront23% off$1.59123% off$2.131▲ 34%

Key differences

The biggest lead each one has.

Where db.m6in.4xlarge leads
On-demand price$2.066 vs $2.767 per hour
25% cheaper
Where db.r6in.4xlarge leads
Memory (GiB)128 vs 64
2× higher

Specs

9 of 24 specs differ. Those are in bold.

Compute2 of 8 differdb.m6in.4xlargedb.r6in.4xlarge
vCPUs1616
Physical cores88
Threads per core22
Architecturex86_64–
ProcessorIntel Xeon Scalable Ice Lake–
CPU makerIntelIntel
Sustained clock3.5 GHz3.5 GHz
BurstableNoNo
Memory1 of 1 differdb.m6in.4xlargedb.r6in.4xlarge
Memory (GiB)64128
Networking1 of 3 differdb.m6in.4xlargedb.r6in.4xlarge
NetworkUp to 50 Gbps–
Network baseline25 Gbps25 Gbps
Network peak50 Gbps50 Gbps
Storage1 of 7 differdb.m6in.4xlargedb.r6in.4xlarge
StorageEBS Only–
EBS baseline bandwidth12,500 Mbps12,500 Mbps
EBS max bandwidth25,000 Mbps25,000 Mbps
EBS baseline throughput1,562.5 MB/s1,562.5 MB/s
EBS max throughput3,125 MB/s3,125 MB/s
EBS baseline IOPS50,00050,000
EBS max IOPS100,000100,000
Instance details3 of 4 differdb.m6in.4xlargedb.r6in.4xlarge
Familym6inr6in
CategoryGeneral purpose–
Current generationYes–
Normalization factor3232
Other1 of 1 differdb.m6in.4xlargedb.r6in.4xlarge
Hardware Basism6in.4xlarger6in.4xlarge

On-demand prices by region

Cheapest for db.m6in.4xlarge first. PostgreSQL, USD per hour.

Regiondb.m6in.4xlargedb.r6in.4xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$2.066$2.767▲ 34%
US East (Ohio)us-east-2$2.066$2.767▲ 34%
US West (Oregon)us-west-2$2.066$2.767▲ 34%
EU (Ireland)eu-west-1$2.292$3.104▲ 35%
Asia Pacific (Tokyo)ap-northeast-1$2.853$3.344▲ 17%
EU (Stockholm)eu-north-1$4.39$5.518▲ 26%
EU (Frankfurt)eu-central-1$4.894$6.178▲ 26%
Asia Pacific (Singapore)ap-southeast-1$5.067$6.178▲ 22%
Asia Pacific (Sydney)ap-southeast-2$5.206$6.282▲ 21%

Keep exploring

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

db.m6in.4xlargeGeneral purpose, m6in family
db.m6in.4xlarge prices and specsEvery size in the m6in family

Compare db.m6in.4xlarge with

db.m6i.4xlarge
db.r6in.4xlarger6in family
db.r6in.4xlarge prices and specsEvery size in the r6in family

Compare db.r6in.4xlarge with

db.r6i.4xlargedb.r6i.4xlarge.tpc2.mem2xdb.r6i.4xlarge.tpc2.mem3xdb.r6i.4xlarge.tpc2.mem4xdb.r6i.4xlarge.tpc2.mem8x

Pay the committed rate, with commitment protection

The best committed rate on these two is 23% 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.