db.m8a.2xlargevsdb.r8a.2xlarge

db.m8a.2xlarge is 29% cheaper than db.r8a.2xlarge on demand in US East (N. Virginia), saving $254.04 a month. Per vCPU, db.m8a.2xlarge costs 64% less.

At a glancedb.m8a.2xlargedb.r8a.2xlarge
On-demand$0.8596/hr29% less$1.208/hr
Lowest rate$0.6877/hr29% less1-yr savings plan, hourly commitment$0.9661/hr1-yr savings plan, hourly commitment
Size8 vCPUs, 32 GiB4 vCPUs, 64 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.2xlargedb.r8a.2xlargedb.r8a.2xlarge vs db.m8a.2xlarge
On-demandPay by the hour$0.8596$1.208▲ 40%
1-yr savings planHourly commitment20% off$0.687720% off$0.9661▲ 40%

Key differences

The biggest lead each one has.

Where db.m8a.2xlarge leads
On-demand price$0.8596 vs $1.208 per hour
29% cheaper
vCPUs8 vs 4
2× higher
Where db.r8a.2xlarge leads
Memory (GiB)64 vs 32
2× higher

Specs

10 of 23 specs differ. Those are in bold.

Compute3 of 8 differdb.m8a.2xlargedb.r8a.2xlarge
vCPUs84
Physical cores88
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.2xlargedb.r8a.2xlarge
Memory (GiB)3264
Networking1 of 3 differdb.m8a.2xlargedb.r8a.2xlarge
Network–Up to 15000 Mbps
Network baseline3.75 Gbps3.75 Gbps
Network peak15 Gbps15 Gbps
Storage1 of 7 differdb.m8a.2xlargedb.r8a.2xlarge
Storage–EBS Only
EBS baseline bandwidth2,500 Mbps2,500 Mbps
EBS max bandwidth10,000 Mbps10,000 Mbps
EBS baseline throughput312.5 MB/s312.5 MB/s
EBS max throughput1,250 MB/s1,250 MB/s
EBS baseline IOPS12,00012,000
EBS max IOPS40,00040,000
Instance details3 of 3 differdb.m8a.2xlargedb.r8a.2xlarge
Familym8ar8a
Category–Memory optimized
Current generation–Yes
Other1 of 1 differdb.m8a.2xlargedb.r8a.2xlarge
Hardware Basism8a.2xlarger8a.2xlarge

On-demand prices by region

Cheapest for db.m8a.2xlarge first. PostgreSQL, USD per hour.

Regiondb.m8a.2xlargedb.r8a.2xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$0.8596$1.208▲ 40%
US East (Ohio)us-east-2$0.8596$1.208▲ 40%
US West (Oregon)us-west-2$0.8596$1.208▲ 40%
EU (Ireland)eu-west-1$0.9516$1.352▲ 42%
Europe (Spain)eu-south-2$0.9516$1.352▲ 42%
EU (Frankfurt)eu-central-1$1.024$1.473▲ 44%
Asia Pacific (Tokyo)ap-northeast-1$1.193$1.449▲ 21%

Keep exploring

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

db.m8a.2xlargem8a family
db.m8a.2xlarge prices and specsEvery size in the m8a family

Compare db.m8a.2xlarge with

db.m8g.2xlargedb.m8i.2xlarge
db.r8a.2xlargeMemory optimized, r8a family
db.r8a.2xlarge prices and specsEvery size in the r8a family

Compare db.r8a.2xlarge with

db.r8i.2xlargedb.r8g.2xlarge

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.

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