db.m8g.largevsdb.m9g.large

db.m8g.large is 8% cheaper than db.m9g.large on demand in US East (N. Virginia), saving $10.95 a month.

At a glancedb.m8g.largedb.m9g.large
On-demand$0.168/hr8% less$0.183/hr
Lowest rate$0.1344/hr8% less1-yr savings plan, hourly commitment$0.1464/hr1-yr savings plan, hourly commitment
Size2 vCPUs, 8 GiB2 vCPUs, 8 GiB
Architecturearm64arm64

Prices in US East (N. Virginia)

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

Optiondb.m8g.largedb.m9g.largedb.m9g.large vs db.m8g.large
On-demandPay by the hour$0.168$0.183▲ 9%
1-yr reservedNo upfront33% off$0.113——
3-yr reservedNo upfront53% off$0.0789——
1-yr savings planHourly commitment20% off$0.134420% off$0.1464▲ 9%

Key differences

The biggest lead each one has.

Where db.m8g.large leads
On-demand price$0.168 vs $0.183 per hour
8% cheaper
Where db.m9g.large leads
EBS baseline bandwidth760 Mbps vs 630 Mbps
21% higher
Network peak15 Gbps vs 12.5 Gbps
20% higher
Sustained clock3.3 GHz vs 2.8 GHz
18% higher

Specs

15 of 24 specs differ. Those are in bold.

Compute2 of 8 differdb.m8g.largedb.m9g.large
vCPUs22
Physical cores22
Threads per core11
Architecturearm64arm64
Processor–AWS Graviton5
CPU makerAWSAWS
Sustained clock2.8 GHz3.3 GHz
BurstableNoNo
MemoryAll 1 matchdb.m8g.largedb.m9g.large
Memory (GiB)88
Networking3 of 3 differdb.m8g.largedb.m9g.large
Network–Up to 15 Gigabit
Network baseline0.937 Gbps1 Gbps
Network peak12.5 Gbps15 Gbps
Storage6 of 7 differdb.m8g.largedb.m9g.large
Storage–EBS Only
EBS baseline bandwidth630 Mbps760 Mbps
EBS max bandwidth10,000 Mbps12,000 Mbps
EBS baseline throughput78.75 MB/s95 MB/s
EBS max throughput1,250 MB/s1,500 MB/s
EBS baseline IOPS3,6003,600
EBS max IOPS40,00048,000
Instance details3 of 4 differdb.m8g.largedb.m9g.large
Familym8gm9g
Category–General purpose
Current generation–Yes
Normalization factor44
Other1 of 1 differdb.m8g.largedb.m9g.large
Hardware Basism8g.largem9g.large

On-demand prices by region

Cheapest for db.m8g.large first. PostgreSQL, USD per hour.

Regiondb.m8g.largedb.m9g.largeDifference
US East (N. Virginia)Used in summaryus-east-1$0.168$0.183▲ 9%
US East (Ohio)us-east-2$0.168$0.183▲ 9%
US West (Oregon)us-west-2$0.168$0.183▲ 9%
EU (Frankfurt)eu-central-1$0.2$0.218▲ 9%

Keep exploring

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

db.m8g.largem8g family
db.m8g.large prices and specsEvery size in the m8g family

Compare db.m8g.large with

db.m8i.largedb.t4g.largedb.r8g.largedb.m8a.largedb.m8gd.largedb.m7g.large
db.m9g.largeGeneral purpose, m9g family
db.m9g.large prices and specsEvery size in the m9g family

Compare db.m9g.large with

db.t4g.large

Pay the committed rate, with commitment protection

The best committed rate on these two is 20–53% 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.