db.m8g.12xlargevsdb.r8g.12xlarge

db.m8g.12xlarge is 30% cheaper than db.r8g.12xlarge on demand in US East (N. Virginia), saving $1,243.92 a month.

At a glancedb.m8g.12xlargedb.r8g.12xlarge
On-demand$4.032/hr30% less$5.736/hr
Lowest rate$1.895/hr30% less3-yr reserved, no upfront$2.696/hr3-yr reserved, no upfront
Size48 vCPUs, 192 GiB48 vCPUs, 384 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.12xlargedb.r8g.12xlargedb.r8g.12xlarge vs db.m8g.12xlarge
On-demandPay by the hour$4.032$5.736▲ 42%
1-yr reservedNo upfront33% off$2.70133% off$3.843▲ 42%
3-yr reservedNo upfront53% off$1.89553% off$2.696▲ 42%
1-yr savings planHourly commitment20% off$3.22620% off$4.589▲ 42%

Key differences

The biggest lead each one has.

Where db.m8g.12xlarge leads
On-demand price$4.032 vs $5.736 per hour
30% cheaper
Where db.r8g.12xlarge leads
Memory (GiB)384 vs 192
2× higher

Specs

9 of 24 specs differ. Those are in bold.

Compute1 of 8 differdb.m8g.12xlargedb.r8g.12xlarge
vCPUs4848
Physical cores4848
Threads per core11
Architecturearm64arm64
Processor–AWS Graviton4
CPU makerAWSAWS
Sustained clock2.8 GHz2.8 GHz
BurstableNoNo
Memory1 of 1 differdb.m8g.12xlargedb.r8g.12xlarge
Memory (GiB)192384
Networking1 of 3 differdb.m8g.12xlargedb.r8g.12xlarge
Network–22.5 Gigabit
Network baseline22.5 Gbps22.5 Gbps
Network peak22.5 Gbps22.5 Gbps
Storage1 of 7 differdb.m8g.12xlargedb.r8g.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.m8g.12xlargedb.r8g.12xlarge
Familym8gr8g
Category–Memory optimized
Current generation–Yes
Normalization factor96192
Other1 of 1 differdb.m8g.12xlargedb.r8g.12xlarge
Hardware Basism8g.12xlarger8g.12xlarge

On-demand prices by region

Cheapest for db.m8g.12xlarge first. PostgreSQL, USD per hour.

Regiondb.m8g.12xlargedb.r8g.12xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$4.032$5.736▲ 42%
US East (Ohio)us-east-2$4.032$5.736▲ 42%
US West (Oregon)us-west-2$4.032$5.736▲ 42%
EU (Stockholm)eu-north-1$4.248$5.88▲ 38%
EU (Ireland)eu-west-1$4.464$6.432▲ 44%
Europe (Spain)eu-south-2$4.464$6.432▲ 44%
US West (N. California)us-west-1$4.608$6.432▲ 40%
EU (London)eu-west-2$4.68$6.732▲ 44%
EU (Paris)eu-west-3$4.68$6.73▲ 44%
Asia Pacific (Malaysia)ap-southeast-5$4.776$5.856▲ 23%
EU (Frankfurt)eu-central-1$4.80$6.984▲ 46%
Europe (Zurich)eu-central-2$5.304$7.68▲ 45%
Asia Pacific (Tokyo)ap-northeast-1$5.616$6.888▲ 23%
Asia Pacific (Singapore)ap-southeast-1$5.621$6.888▲ 23%
Asia Pacific (Sydney)ap-southeast-2$5.621$6.888▲ 23%
Asia Pacific (Seoul)ap-northeast-2$5.626$6.886▲ 22%
Asia Pacific (Mumbai)ap-south-1$5.748$6.528▲ 14%
Asia Pacific (Hyderabad)ap-south-2$5.76$6.528▲ 13%
Asia Pacific (Hong Kong)ap-east-1$6.192$7.574▲ 22%
South America (Sao Paulo)sa-east-1$6.411$9.12▲ 42%

Keep exploring

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

db.m8g.12xlargem8g family
db.m8g.12xlarge prices and specsEvery size in the m8g family

Compare db.m8g.12xlarge with

db.m8i.12xlargedb.m8a.12xlargedb.m8gd.12xlargedb.m7g.12xlargedb.m9g.12xlarge
db.r8g.12xlargeMemory optimized, r8g family
db.r8g.12xlarge prices and specsEvery size in the r8g family

Compare db.r8g.12xlarge with

db.r8gd.12xlargedb.r8i.12xlargedb.r8a.12xlargedb.r7g.12xlarge

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.

Connect AWS account

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