db.m6idn.4xlargevsdb.r6idn.4xlarge

db.m6idn.4xlarge is 24% cheaper than db.r6idn.4xlarge on demand in US East (N. Virginia), saving $540.93 a month.

At a glancedb.m6idn.4xlargedb.r6idn.4xlarge
On-demand$2.36/hr24% less$3.101/hr
Lowest rate$1.817/hr24% less1-yr reserved, no upfront$2.388/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.m6idn.4xlargedb.r6idn.4xlargedb.r6idn.4xlarge vs db.m6idn.4xlarge
On-demandPay by the hour$2.36$3.101▲ 31%
1-yr reservedNo upfront23% off$1.81723% off$2.388▲ 31%

Key differences

The biggest lead each one has.

Where db.m6idn.4xlarge leads
On-demand price$2.36 vs $3.101 per hour
24% cheaper
Where db.r6idn.4xlarge leads
Memory (GiB)128 vs 64
2× higher

Specs

3 of 19 specs differ. Those are in bold.

ComputeAll 6 matchdb.m6idn.4xlargedb.r6idn.4xlarge
vCPUs1616
Physical cores88
Threads per core22
CPU makerIntelIntel
Sustained clock3.5 GHz3.5 GHz
BurstableNoNo
Memory1 of 1 differdb.m6idn.4xlargedb.r6idn.4xlarge
Memory (GiB)64128
NetworkingAll 2 matchdb.m6idn.4xlargedb.r6idn.4xlarge
Network baseline25 Gbps25 Gbps
Network peak50 Gbps50 Gbps
StorageAll 7 matchdb.m6idn.4xlargedb.r6idn.4xlarge
Local disks1 × 950 GB SSD1 × 950 GB SSD
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 details1 of 2 differdb.m6idn.4xlargedb.r6idn.4xlarge
Familym6idnr6idn
Normalization factor3232
Other1 of 1 differdb.m6idn.4xlargedb.r6idn.4xlarge
Hardware Basism6idn.4xlarger6idn.4xlarge

On-demand prices by region

Cheapest for db.m6idn.4xlarge first. PostgreSQL, USD per hour.

Regiondb.m6idn.4xlargedb.r6idn.4xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$2.36$3.101▲ 31%
US East (Ohio)us-east-2$2.36$3.101▲ 31%
US West (Oregon)us-west-2$2.36$3.101▲ 31%
EU (Ireland)eu-west-1$2.619$3.457▲ 32%
Asia Pacific (Tokyo)ap-northeast-1$3.263$3.75▲ 15%

Keep exploring

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

db.m6idn.4xlargem6idn family
db.m6idn.4xlarge prices and specsEvery size in the m6idn family

Compare db.m6idn.4xlarge with

db.m6i.4xlarge
db.r6idn.4xlarger6idn family
db.r6idn.4xlarge prices and specsEvery size in the r6idn family

Compare db.r6idn.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.

Connect AWS account

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