db.m6i.4xlargevsdb.m6in.4xlarge

db.m6i.4xlarge is 31% cheaper than db.m6in.4xlarge on demand in US East (N. Virginia), saving $468.66 a month.

At a glancedb.m6i.4xlargedb.m6in.4xlarge
On-demand$1.424/hr31% less$2.066/hr
Lowest rate$0.912/hr43% less1-yr reserved, no upfront$1.591/hr1-yr reserved, no upfront
Size16 vCPUs, 64 GiB16 vCPUs, 64 GiB

Prices in US East (N. Virginia)

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

Optiondb.m6i.4xlargedb.m6in.4xlargedb.m6in.4xlarge vs db.m6i.4xlarge
On-demandPay by the hour$1.424$2.066▲ 45%
1-yr reservedNo upfront36% off$0.91223% off$1.591▲ 74%

Key differences

The biggest lead each one has.

Where db.m6i.4xlarge leads
On-demand price$1.424 vs $2.066 per hour
31% cheaper
Where db.m6in.4xlarge leads
Network baseline25 Gbps vs 6.25 Gbps
4× higher
EBS baseline bandwidth12,500 Mbps vs 5,000 Mbps
2.5× higher

Specs

15 of 24 specs differ. Those are in bold.

Compute2 of 8 differdb.m6i.4xlargedb.m6in.4xlarge
vCPUs1616
Physical cores88
Threads per core22
Architecture–x86_64
Processor–Intel Xeon Scalable Ice Lake
CPU makerIntelIntel
Sustained clock3.5 GHz3.5 GHz
BurstableNoNo
MemoryAll 1 matchdb.m6i.4xlargedb.m6in.4xlarge
Memory (GiB)6464
Networking3 of 3 differdb.m6i.4xlargedb.m6in.4xlarge
Network–Up to 50 Gbps
Network baseline6.25 Gbps25 Gbps
Network peak12.5 Gbps50 Gbps
Storage6 of 7 differdb.m6i.4xlargedb.m6in.4xlarge
StorageEBS OnlyEBS Only
EBS baseline bandwidth5,000 Mbps12,500 Mbps
EBS max bandwidth10,000 Mbps25,000 Mbps
EBS baseline throughput625 MB/s1,562.5 MB/s
EBS max throughput1,250 MB/s3,125 MB/s
EBS baseline IOPS20,00050,000
EBS max IOPS40,000100,000
Instance details3 of 4 differdb.m6i.4xlargedb.m6in.4xlarge
Familym6im6in
CategoryGeneral purposeGeneral purpose
Current generation–Yes
Normalization factor–32
Other1 of 1 differdb.m6i.4xlargedb.m6in.4xlarge
Hardware Basism6i.4xlargem6in.4xlarge

On-demand prices by region

Cheapest for db.m6i.4xlarge first. PostgreSQL, USD per hour.

Regiondb.m6i.4xlargedb.m6in.4xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$1.424$2.066▲ 45%
US East (Ohio)us-east-2$1.424$2.066▲ 45%
US West (Oregon)us-west-2$1.424$2.066▲ 45%
EU (Stockholm)eu-north-1$1.496$4.39▲ 193%
EU (Ireland)eu-west-1$1.576$2.292▲ 45%
EU (Frankfurt)eu-central-1$1.696$4.894▲ 189%
Asia Pacific (Singapore)ap-southeast-1$1.976$5.067▲ 156%
Asia Pacific (Sydney)ap-southeast-2$1.976$5.206▲ 163%
Asia Pacific (Tokyo)ap-northeast-1$1.976$2.853▲ 44%

Keep exploring

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

db.m6i.4xlargeGeneral purpose, m6i family
db.m6i.4xlarge prices and specsEvery size in the m6i family

Compare db.m6i.4xlarge with

db.m6g.4xlargedb.r6i.4xlargedb.r6i.4xlarge.tpc2.mem2xdb.r6i.4xlarge.tpc2.mem3xdb.r6i.4xlarge.tpc2.mem4xdb.m6id.4xlargedb.m6idn.4xlargedb.r6i.4xlarge.tpc2.mem8xdb.m5.4xlargedb.m7i.4xlarge
db.m6in.4xlargeGeneral purpose, m6in family
db.m6in.4xlarge prices and specsEvery size in the m6in family

Compare db.m6in.4xlarge with

db.r6in.4xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 23–36% 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.