db.m8a.12xlargevsdb.r8a.12xlarge

db.m8a.12xlarge is 29% cheaper than db.r8a.12xlarge on demand in US East (N. Virginia), saving $1,524.24 a month.

At a glancedb.m8a.12xlargedb.r8a.12xlarge
On-demand$5.158/hr29% less$7.246/hr
Lowest rate$4.126/hr29% less1-yr savings plan, hourly commitment$5.796/hr1-yr savings plan, hourly commitment
Size48 vCPUs, 192 GiB48 vCPUs, 384 GiB

Prices in US East (N. Virginia)

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

Optiondb.m8a.12xlargedb.r8a.12xlargedb.r8a.12xlarge vs db.m8a.12xlarge
On-demandPay by the hour$5.158$7.246▲ 40%
1-yr savings planHourly commitment20% off$4.12620% off$5.796▲ 40%

Key differences

The biggest lead each one has.

Where db.m8a.12xlarge leads
On-demand price$5.158 vs $7.246 per hour
29% cheaper
Where db.r8a.12xlarge leads
Memory (GiB)384 vs 192
2× higher

Specs

10 of 24 specs differ. Those are in bold.

Compute2 of 8 differdb.m8a.12xlargedb.r8a.12xlarge
vCPUs4848
Physical cores4848
Threads per core11
Architecture–x86_64
Processor–5th Generation AMD EPYC
CPU makerAMDAMD
Sustained clock4.5 GHz4.5 GHz
BurstableNoNo
Memory1 of 1 differdb.m8a.12xlargedb.r8a.12xlarge
Memory (GiB)192384
Networking1 of 3 differdb.m8a.12xlargedb.r8a.12xlarge
Network–22500 Mbps
Network baseline22.5 Gbps22.5 Gbps
Network peak22.5 Gbps22.5 Gbps
Storage1 of 7 differdb.m8a.12xlargedb.r8a.12xlarge
Storage–EBS Only
EBS baseline bandwidth15,000 Mbps15,000 Mbps
EBS max bandwidth15,000 Mbps15,000 Mbps
EBS baseline throughput1,875 MB/s1,875 MB/s
EBS max throughput1,875 MB/s1,875 MB/s
EBS baseline IOPS60,00060,000
EBS max IOPS60,00060,000
Instance details4 of 4 differdb.m8a.12xlargedb.r8a.12xlarge
Familym8ar8a
Category–Memory optimized
Current generation–Yes
Normalization factor–96
Other1 of 1 differdb.m8a.12xlargedb.r8a.12xlarge
Hardware Basism8a.12xlarger8a.12xlarge

On-demand prices by region

Cheapest for db.m8a.12xlarge first. PostgreSQL, USD per hour.

Regiondb.m8a.12xlargedb.r8a.12xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$5.158$7.246▲ 40%
US East (Ohio)us-east-2$5.158$7.246▲ 40%
US West (Oregon)us-west-2$5.158$7.246▲ 40%
EU (Ireland)eu-west-1$5.71$8.114▲ 42%
Europe (Spain)eu-south-2$5.71$8.114▲ 42%
EU (Frankfurt)eu-central-1$6.144$8.839▲ 44%
Asia Pacific (Tokyo)ap-northeast-1$7.159$8.695▲ 21%

Keep exploring

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

db.m8a.12xlargem8a family
db.m8a.12xlarge prices and specsEvery size in the m8a family

Compare db.m8a.12xlarge with

db.m8g.12xlargedb.m8i.12xlarge
db.r8a.12xlargeMemory optimized, r8a family
db.r8a.12xlarge prices and specsEvery size in the r8a family

Compare db.r8a.12xlarge with

db.r8i.12xlargedb.r8g.12xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 20% 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.