db.m8g.16xlargevsdb.r8g.16xlarge

db.m8g.16xlarge is 30% cheaper than db.r8g.16xlarge on demand in US East (N. Virginia), saving $1,658.56 a month.

At a glancedb.m8g.16xlargedb.r8g.16xlarge
On-demand$5.376/hr30% less$7.648/hr
Lowest rate$2.527/hr30% less3-yr reserved, no upfront$3.595/hr3-yr reserved, no upfront
Size64 vCPUs, 256 GiB64 vCPUs, 512 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.16xlargedb.r8g.16xlargedb.r8g.16xlarge vs db.m8g.16xlarge
On-demandPay by the hour$5.376$7.648▲ 42%
1-yr reservedNo upfront33% off$3.60233% off$5.124▲ 42%
3-yr reservedNo upfront53% off$2.52753% off$3.595▲ 42%
1-yr savings planHourly commitment20% off$4.30120% off$6.118▲ 42%

Key differences

The biggest lead each one has.

Where db.m8g.16xlarge leads
On-demand price$5.376 vs $7.648 per hour
30% cheaper
Where db.r8g.16xlarge leads
Memory (GiB)512 vs 256
2× higher

Specs

8 of 24 specs differ. Those are in bold.

Compute1 of 8 differdb.m8g.16xlargedb.r8g.16xlarge
vCPUs6464
Physical cores6464
Threads per core11
Architecturearm64arm64
Processor–AWS Graviton4
CPU makerAWSAWS
Sustained clock2.8 GHz2.8 GHz
BurstableNoNo
Memory1 of 1 differdb.m8g.16xlargedb.r8g.16xlarge
Memory (GiB)256512
Networking1 of 3 differdb.m8g.16xlargedb.r8g.16xlarge
Network–30 Gigabit
Network baseline30 Gbps30 Gbps
Network peak30 Gbps30 Gbps
Storage1 of 7 differdb.m8g.16xlargedb.r8g.16xlarge
Storage–EBS Only
EBS baseline bandwidth20,000 Mbps20,000 Mbps
EBS max bandwidth20,000 Mbps20,000 Mbps
EBS baseline throughput2,500 MB/s2,500 MB/s
EBS max throughput2,500 MB/s2,500 MB/s
EBS baseline IOPS80,00080,000
EBS max IOPS80,00080,000
Instance details3 of 4 differdb.m8g.16xlargedb.r8g.16xlarge
Familym8gr8g
Category–Memory optimized
Current generation–Yes
Normalization factor128128
Other1 of 1 differdb.m8g.16xlargedb.r8g.16xlarge
Hardware Basism8g.16xlarger8g.16xlarge

On-demand prices by region

Cheapest for db.m8g.16xlarge first. PostgreSQL, USD per hour.

Regiondb.m8g.16xlargedb.r8g.16xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$5.376$7.648▲ 42%
US East (Ohio)us-east-2$5.376$7.648▲ 42%
US West (Oregon)us-west-2$5.376$7.648▲ 42%
EU (Stockholm)eu-north-1$5.664$7.84▲ 38%
EU (Ireland)eu-west-1$5.952$8.576▲ 44%
Europe (Spain)eu-south-2$5.952$8.576▲ 44%
US West (N. California)us-west-1$6.144$8.576▲ 40%
EU (London)eu-west-2$6.24$8.976▲ 44%
EU (Paris)eu-west-3$6.24$8.974▲ 44%
Asia Pacific (Malaysia)ap-southeast-5$6.368$7.808▲ 23%
EU (Frankfurt)eu-central-1$6.40$9.312▲ 45%
Europe (Zurich)eu-central-2$7.072$10.24▲ 45%
Asia Pacific (Tokyo)ap-northeast-1$7.488$9.184▲ 23%
Asia Pacific (Singapore)ap-southeast-1$7.494$9.184▲ 23%
Asia Pacific (Sydney)ap-southeast-2$7.494$9.184▲ 23%
Asia Pacific (Seoul)ap-northeast-2$7.501$9.181▲ 22%
Asia Pacific (Mumbai)ap-south-1$7.664$8.704▲ 14%
Asia Pacific (Hyderabad)ap-south-2$7.68$8.704▲ 13%
Asia Pacific (Hong Kong)ap-east-1$8.255$10.099▲ 22%
South America (Sao Paulo)sa-east-1$8.548$12.16▲ 42%

Keep exploring

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

db.m8g.16xlargem8g family
db.m8g.16xlarge prices and specsEvery size in the m8g family

Compare db.m8g.16xlarge with

db.m8i.16xlargedb.m8a.16xlargedb.m8gd.16xlargedb.m7g.16xlargedb.m9g.16xlarge
db.r8g.16xlargeMemory optimized, r8g family
db.r8g.16xlarge prices and specsEvery size in the r8g family

Compare db.r8g.16xlarge with

db.r8gd.16xlargedb.r8i.16xlargedb.r8a.16xlargedb.r7g.16xlarge

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.