db.t4g.2xlargevsdb.m9g.2xlarge

db.t4g.2xlarge is 29% cheaper than db.m9g.2xlarge on demand in US East (N. Virginia), saving $156.95 a month.

At a glancedb.t4g.2xlargedb.m9g.2xlarge
On-demand$0.517/hr29% less$0.732/hr
Size8 vCPUs, 32 GiB8 vCPUs, 32 GiB
ProcessorAWS Graviton2AWS Graviton5
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.2xlargedb.m9g.2xlargedb.m9g.2xlarge vs db.t4g.2xlarge
On-demandPay by the hour$0.517$0.732▲ 42%
1-yr reservedNo upfront28% off$0.3721——
1-yr savings planHourly commitment—20% off$0.5856—

Key differences

The biggest lead each one has.

Where db.t4g.2xlarge leads
On-demand price$0.517 vs $0.732 per hour
29% cheaper
CPU modelEarns credits while idle, then bursts
Burstable
Where db.m9g.2xlarge leads
CPU modelSteady performance, no credits to manage
Full CPU
EBS baseline bandwidth3,000 Mbps vs 695 Mbps
4.3× higher
Network peak17 Gbps vs 5 Gbps
3.4× higher
Sustained clock3.3 GHz vs 2.5 GHz
32% higher

Specs

14 of 24 specs differ. Those are in bold.

Compute3 of 8 differdb.t4g.2xlargedb.m9g.2xlarge
vCPUs88
Physical cores88
Threads per core11
Architecturearm64arm64
ProcessorAWS Graviton2AWS Graviton5
CPU makerAWSAWS
Sustained clock2.5 GHz3.3 GHz
BurstableYesNo
MemoryAll 1 matchdb.t4g.2xlargedb.m9g.2xlarge
Memory (GiB)3232
Networking3 of 3 differdb.t4g.2xlargedb.m9g.2xlarge
NetworkUp to 5 GigabitUp to 17 Gigabit
Network baseline2.048 Gbps4.25 Gbps
Network peak5 Gbps17 Gbps
Storage6 of 7 differdb.t4g.2xlargedb.m9g.2xlarge
StorageEBS OnlyEBS Only
EBS baseline bandwidth695 Mbps3,000 Mbps
EBS max bandwidth2,780 Mbps12,000 Mbps
EBS baseline throughput86.875 MB/s375 MB/s
EBS max throughput347.5 MB/s1,500 MB/s
EBS baseline IOPS4,00012,000
EBS max IOPS15,70048,000
Instance details1 of 4 differdb.t4g.2xlargedb.m9g.2xlarge
Familyt4gm9g
CategoryGeneral purposeGeneral purpose
Current generationYesYes
Normalization factor1616
Other1 of 1 differdb.t4g.2xlargedb.m9g.2xlarge
Hardware Basist4g.2xlargem9g.2xlarge

On-demand prices by region

Cheapest for db.t4g.2xlarge first. PostgreSQL, USD per hour.

Regiondb.t4g.2xlargedb.m9g.2xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$0.517$0.732▲ 42%
US East (Ohio)us-east-2$0.517$0.732▲ 42%
US West (Oregon)us-west-2$0.517$0.732▲ 42%
EU (Frankfurt)eu-central-1$0.595$0.872▲ 47%

Keep exploring

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

db.t4g.2xlargeGeneral purpose, t4g family, burstable
db.t4g.2xlarge prices and specsEvery size in the t4g family

Compare db.t4g.2xlarge with

db.m6g.2xlargedb.m8g.2xlargedb.m6gd.2xlargedb.m7g.2xlargedb.m8gd.2xlarge
db.m9g.2xlargeGeneral purpose, m9g family
db.m9g.2xlarge prices and specsEvery size in the m9g family

Compare db.m9g.2xlarge with

db.m8g.2xlarge

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.

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