db.m8a.xlargevsdb.r8a.xlarge

db.m8a.xlarge is 29% cheaper than db.r8a.xlarge on demand in US East (N. Virginia), saving $127.02 a month.

At a glancedb.m8a.xlargedb.r8a.xlarge
On-demand$0.4298/hr29% less$0.6038/hr
Lowest rate$0.3438/hr29% less1-yr savings plan, hourly commitment$0.483/hr1-yr savings plan, hourly commitment
Size4 vCPUs, 16 GiB4 vCPUs, 32 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.xlargedb.r8a.xlargedb.r8a.xlarge vs db.m8a.xlarge
On-demandPay by the hour$0.4298$0.6038▲ 40%
1-yr savings planHourly commitment20% off$0.343820% off$0.483▲ 40%

Key differences

The biggest lead each one has.

Where db.m8a.xlarge leads
On-demand price$0.4298 vs $0.6038 per hour
29% cheaper
Where db.r8a.xlarge leads
Memory (GiB)32 vs 16
2× higher

Specs

4 of 18 specs differ. Those are in bold.

ComputeAll 6 matchdb.m8a.xlargedb.r8a.xlarge
vCPUs44
Physical cores44
Threads per core11
CPU makerAMDAMD
Sustained clock4.5 GHz4.5 GHz
BurstableNoNo
Memory1 of 1 differdb.m8a.xlargedb.r8a.xlarge
Memory (GiB)1632
NetworkingAll 2 matchdb.m8a.xlargedb.r8a.xlarge
Network baseline1.875 Gbps1.875 Gbps
Network peak12.5 Gbps12.5 Gbps
StorageAll 6 matchdb.m8a.xlargedb.r8a.xlarge
EBS baseline bandwidth1,250 Mbps1,250 Mbps
EBS max bandwidth10,000 Mbps10,000 Mbps
EBS baseline throughput156.25 MB/s156.25 MB/s
EBS max throughput1,250 MB/s1,250 MB/s
EBS baseline IOPS6,0006,000
EBS max IOPS40,00040,000
Instance details2 of 2 differdb.m8a.xlargedb.r8a.xlarge
Familym8ar8a
Normalization factor8–
Other1 of 1 differdb.m8a.xlargedb.r8a.xlarge
Hardware Basism8a.xlarger8a.xlarge

On-demand prices by region

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

Regiondb.m8a.xlargedb.r8a.xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$0.4298$0.6038▲ 40%
US East (Ohio)us-east-2$0.4298$0.6038▲ 40%
US West (Oregon)us-west-2$0.4298$0.6038▲ 40%
EU (Ireland)eu-west-1$0.4758$0.6762▲ 42%
Europe (Spain)eu-south-2$0.4758$0.6762▲ 42%
EU (Frankfurt)eu-central-1$0.512$0.7366▲ 44%
Asia Pacific (Tokyo)ap-northeast-1$0.5966$0.7246▲ 21%

Keep exploring

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

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

Compare db.m8a.xlarge with

db.m8g.xlargedb.m8i.xlarge
db.r8a.xlarger8a family
db.r8a.xlarge prices and specsEvery size in the r8a family

Compare db.r8a.xlarge with

db.r8i.xlargedb.r8g.xlarge

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.