db.t4g.largevsdb.m9g.large

db.t4g.large is 30% cheaper than db.m9g.large on demand in US East (N. Virginia), saving $39.42 a month.

At a glancedb.t4g.largedb.m9g.large
On-demand$0.129/hr30% less$0.183/hr
Size2 vCPUs, 8 GiB2 vCPUs, 8 GiB
Architecturearm64arm64
CPUBurstableBest for workloads that are mostly idleFull CPUSteady performance, no credits to manage

Prices in US East (N. Virginia)

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

Optiondb.t4g.largedb.m9g.largedb.m9g.large vs db.t4g.large
On-demandPay by the hour$0.129$0.183▲ 42%
1-yr reservedNo upfront28% off$0.093——
1-yr savings planHourly commitment—20% off$0.1464—

Key differences

The biggest lead each one has.

Where db.t4g.large leads
On-demand price$0.129 vs $0.183 per hour
30% cheaper
CPU modelEarns credits while idle, then bursts
Burstable
EBS baseline IOPS4,000 vs 3,600
11% higher
Where db.m9g.large leads
CPU modelSteady performance, no credits to manage
Full CPU
EBS max bandwidth12,000 Mbps vs 2,780 Mbps
4.3× higher
Network peak15 Gbps vs 5 Gbps
3× higher
Sustained clock3.3 GHz vs 2.5 GHz
32% higher

Specs

17 of 24 specs differ. Those are in bold.

Compute3 of 8 differdb.t4g.largedb.m9g.large
vCPUs22
Physical cores22
Threads per core11
Architecturearm64arm64
Processor–AWS Graviton5
CPU makerAWSAWS
Sustained clock2.5 GHz3.3 GHz
BurstableYesNo
MemoryAll 1 matchdb.t4g.largedb.m9g.large
Memory (GiB)88
Networking3 of 3 differdb.t4g.largedb.m9g.large
Network–Up to 15 Gigabit
Network baseline0.512 Gbps1 Gbps
Network peak5 Gbps15 Gbps
Storage7 of 7 differdb.t4g.largedb.m9g.large
Storage–EBS Only
EBS baseline bandwidth695 Mbps760 Mbps
EBS max bandwidth2,780 Mbps12,000 Mbps
EBS baseline throughput86.875 MB/s95 MB/s
EBS max throughput347.5 MB/s1,500 MB/s
EBS baseline IOPS4,0003,600
EBS max IOPS15,70048,000
Instance details3 of 4 differdb.t4g.largedb.m9g.large
Familyt4gm9g
Category–General purpose
Current generation–Yes
Normalization factor44
Other1 of 1 differdb.t4g.largedb.m9g.large
Hardware Basist4g.largem9g.large

On-demand prices by region

Cheapest for db.t4g.large first. PostgreSQL, USD per hour.

Regiondb.t4g.largedb.m9g.largeDifference
US East (N. Virginia)Used in summaryus-east-1$0.129$0.183▲ 42%
US East (Ohio)us-east-2$0.129$0.183▲ 42%
US West (Oregon)us-west-2$0.129$0.183▲ 42%
EU (Frankfurt)eu-central-1$0.149$0.218▲ 46%

Keep exploring

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

db.t4g.larget4g family, burstable
db.t4g.large prices and specsEvery size in the t4g family

Compare db.t4g.large with

db.m6g.largedb.m8g.largedb.m6gd.largedb.m7g.largedb.m8gd.large
db.m9g.largeGeneral purpose, m9g family
db.m9g.large prices and specsEvery size in the m9g family

Compare db.m9g.large with

db.m8g.large

Pay the committed rate, with commitment protection

The best committed rate on these two is 20–28% 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.