db.m8a.24xlargevsdb.m8g.24xlarge

db.m8g.24xlarge is 22% cheaper than db.m8a.24xlarge on demand in US East (N. Virginia), saving $1,643.38 a month. They use different processor architectures (x86_64 and arm64), so software built for one may need rebuilding to run on the other.

At a glancedb.m8a.24xlargedb.m8g.24xlarge
On-demand$10.315/hr$8.064/hr22% less
Lowest rate$8.252/hr1-yr savings plan, hourly commitment$6.451/hr22% less1-yr savings plan, hourly commitment
Size96 vCPUs, 384 GiB96 vCPUs, 512 GiB
Processor5th Generation AMD EPYCAWS Graviton4
Architecturex86_64arm64

Prices in US East (N. Virginia)

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

Optiondb.m8a.24xlargedb.m8g.24xlargedb.m8g.24xlarge vs db.m8a.24xlarge
On-demandPay by the hour$10.315$8.064▼ 22%
1-yr reservedNo upfront—33% off$5.403—
3-yr reservedNo upfront—53% off$3.79—
1-yr savings planHourly commitment20% off$8.25220% off$6.451▼ 22%

Key differences

The biggest lead each one has.

Where db.m8a.24xlarge leads
Sustained clock4.5 GHz vs 2.8 GHz
61% higher
Where db.m8g.24xlarge leads
On-demand price$8.064 vs $10.315 per hour
22% cheaper
Memory (GiB)512 vs 384
33% higher

Specs

8 of 24 specs differ. Those are in bold.

Compute4 of 8 differdb.m8a.24xlargedb.m8g.24xlarge
vCPUs9696
Physical cores9696
Threads per core11
Architecturex86_64arm64
Processor5th Generation AMD EPYCAWS Graviton4
CPU makerAMDAWS
Sustained clock4.5 GHz2.8 GHz
BurstableNoNo
Memory1 of 1 differdb.m8a.24xlargedb.m8g.24xlarge
Memory (GiB)384512
Networking1 of 3 differdb.m8a.24xlargedb.m8g.24xlarge
Network40000 Mbps40 Gigabit
Network baseline40 Gbps40 Gbps
Network peak40 Gbps40 Gbps
StorageAll 7 matchdb.m8a.24xlargedb.m8g.24xlarge
StorageEBS OnlyEBS Only
EBS baseline bandwidth30,000 Mbps30,000 Mbps
EBS max bandwidth30,000 Mbps30,000 Mbps
EBS baseline throughput3,750 MB/s3,750 MB/s
EBS max throughput3,750 MB/s3,750 MB/s
EBS baseline IOPS120,000120,000
EBS max IOPS120,000120,000
Instance details1 of 4 differdb.m8a.24xlargedb.m8g.24xlarge
Familym8am8g
CategoryGeneral purposeGeneral purpose
Current generationYesYes
Normalization factor192192
Other1 of 1 differdb.m8a.24xlargedb.m8g.24xlarge
Hardware Basism8a.24xlargem8g.24xlarge

On-demand prices by region

Cheapest for db.m8a.24xlarge first. PostgreSQL, USD per hour.

Regiondb.m8a.24xlargedb.m8g.24xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$10.315$8.064▼ 22%
US East (Ohio)us-east-2$10.315$8.064▼ 22%
US West (Oregon)us-west-2$10.315$8.064▼ 22%
EU (Ireland)eu-west-1$11.419$8.928▼ 22%
Europe (Spain)eu-south-2$11.419$8.928▼ 22%
EU (Frankfurt)eu-central-1$12.288$9.60▼ 22%
Asia Pacific (Tokyo)ap-northeast-1$14.318$11.232▼ 22%
Asia Pacific (Hyderabad)ap-south-2$14.669$11.52▼ 21%
Asia Pacific (Mumbai)ap-south-1$14.669$11.496▼ 22%

Keep exploring

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

db.m8a.24xlargeGeneral purpose, m8a family
db.m8a.24xlarge prices and specsEvery size in the m8a family

Compare db.m8a.24xlarge with

db.m8i.24xlargedb.r8a.24xlarge
db.m8g.24xlargeGeneral purpose, m8g family
db.m8g.24xlarge prices and specsEvery size in the m8g family

Compare db.m8g.24xlarge with

db.m8i.24xlargedb.r8g.24xlargedb.m8gd.24xlargedb.m9g.24xlarge

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.

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