db.m8g.largevsdb.r8g.large

db.m8g.large is 30% cheaper than db.r8g.large on demand in US East (N. Virginia), saving $51.83 a month.

At a glancedb.m8g.largedb.r8g.large
On-demand$0.168/hr30% less$0.239/hr
Lowest rate$0.0789/hr30% less3-yr reserved, no upfront$0.1123/hr3-yr reserved, no upfront
Size2 vCPUs, 8 GiB2 vCPUs, 16 GiB
Architecturearm64arm64

Prices in US East (N. Virginia)

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

Optiondb.m8g.largedb.r8g.largedb.r8g.large vs db.m8g.large
On-demandPay by the hour$0.168$0.239▲ 42%
1-yr reservedNo upfront33% off$0.11333% off$0.16▲ 42%
3-yr reservedNo upfront53% off$0.078953% off$0.1123▲ 42%
1-yr savings planHourly commitment20% off$0.134420% off$0.1912▲ 42%

Key differences

The biggest lead each one has.

Where db.m8g.large leads
On-demand price$0.168 vs $0.239 per hour
30% cheaper
Where db.r8g.large leads
Memory (GiB)16 vs 8
2× higher

Specs

9 of 24 specs differ. Those are in bold.

Compute1 of 8 differdb.m8g.largedb.r8g.large
vCPUs22
Physical cores22
Threads per core11
Architecturearm64arm64
Processor–AWS Graviton4
CPU makerAWSAWS
Sustained clock2.8 GHz2.8 GHz
BurstableNoNo
Memory1 of 1 differdb.m8g.largedb.r8g.large
Memory (GiB)816
Networking1 of 3 differdb.m8g.largedb.r8g.large
Network–Up to 12.5 Gigabit
Network baseline0.937 Gbps0.937 Gbps
Network peak12.5 Gbps12.5 Gbps
Storage1 of 7 differdb.m8g.largedb.r8g.large
Storage–Aurora IO Optimization Mode
EBS baseline bandwidth630 Mbps630 Mbps
EBS max bandwidth10,000 Mbps10,000 Mbps
EBS baseline throughput78.75 MB/s78.75 MB/s
EBS max throughput1,250 MB/s1,250 MB/s
EBS baseline IOPS3,6003,600
EBS max IOPS40,00040,000
Instance details4 of 4 differdb.m8g.largedb.r8g.large
Familym8gr8g
Category–Memory optimized
Current generation–Yes
Normalization factor45.2
Other1 of 1 differdb.m8g.largedb.r8g.large
Hardware Basism8g.larger8g.large

On-demand prices by region

Cheapest for db.m8g.large first. PostgreSQL, USD per hour.

Regiondb.m8g.largedb.r8g.largeDifference
US East (N. Virginia)Used in summaryus-east-1$0.168$0.239▲ 42%
US East (Ohio)us-east-2$0.168$0.239▲ 42%
US West (Oregon)us-west-2$0.168$0.239▲ 42%
EU (Stockholm)eu-north-1$0.177$0.245▲ 38%
EU (Ireland)eu-west-1$0.186$0.268▲ 44%
Europe (Spain)eu-south-2$0.186$0.268▲ 44%
US West (N. California)us-west-1$0.192$0.268▲ 40%
EU (London)eu-west-2$0.195$0.281▲ 44%
EU (Paris)eu-west-3$0.195$0.28▲ 44%
Asia Pacific (Malaysia)ap-southeast-5$0.199$0.244▲ 23%
EU (Frankfurt)eu-central-1$0.2$0.291▲ 45%
Europe (Zurich)eu-central-2$0.221$0.32▲ 45%
Asia Pacific (Singapore)ap-southeast-1$0.234$0.287▲ 23%
Asia Pacific (Sydney)ap-southeast-2$0.234$0.287▲ 23%
Asia Pacific (Tokyo)ap-northeast-1$0.234$0.287▲ 23%
Asia Pacific (Seoul)ap-northeast-2$0.2344$0.287▲ 22%
Asia Pacific (Hyderabad)ap-south-2$0.24$0.272▲ 13%
Asia Pacific (Mumbai)ap-south-1$0.24$0.272▲ 13%
Asia Pacific (Hong Kong)ap-east-1$0.258$0.316▲ 22%
South America (Sao Paulo)sa-east-1$0.2671$0.38▲ 42%

Keep exploring

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

db.m8g.largem8g family
db.m8g.large prices and specsEvery size in the m8g family

Compare db.m8g.large with

db.m8i.largedb.t4g.largedb.m8a.largedb.m8gd.largedb.m7g.largedb.m9g.large
db.r8g.largeMemory optimized, r8g family
db.r8g.large prices and specsEvery size in the r8g family

Compare db.r8g.large with

db.r8gd.largedb.r8i.largedb.r8a.largedb.r7g.large

Pay the committed rate, with commitment protection

The best committed rate on these two is 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.