db.m8g.48xlargevsdb.m8i.48xlarge

db.m8g.48xlarge is 10% cheaper than db.m8i.48xlarge on demand in US East (N. Virginia), saving $1,322.76 a month.

At a glancedb.m8g.48xlargedb.m8i.48xlarge
On-demand$16.128/hr10% less$17.94/hr
Lowest rate$7.58/hr10% less3-yr reserved, no upfront$8.432/hr3-yr reserved, no upfront
Size192 vCPUs, 768 GiB192 vCPUs, 768 GiB

Prices in US East (N. Virginia)

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

Optiondb.m8g.48xlargedb.m8i.48xlargedb.m8i.48xlarge vs db.m8g.48xlarge
On-demandPay by the hour$16.128$17.94▲ 11%
1-yr reservedNo upfront33% off$10.80633% off$12.02▲ 11%
3-yr reservedNo upfront53% off$7.5853% off$8.432▲ 11%
1-yr savings planHourly commitment20% off$12.90220% off$14.352▲ 11%

Key differences

The biggest lead each one has.

Where db.m8g.48xlarge leads
On-demand price$16.128 vs $17.94 per hour
10% cheaper
Physical cores192 vs 96
2× higher
Where db.m8i.48xlarge leads
Network baseline75 Gbps vs 50 Gbps
50% higher
EBS baseline bandwidth60,000 Mbps vs 40,000 Mbps
50% higher
Sustained clock3.9 GHz vs 2.7 GHz
44% higher

Specs

13 of 19 specs differ. Those are in bold.

Compute5 of 7 differdb.m8g.48xlargedb.m8i.48xlarge
vCPUs192192
Physical cores19296
Threads per core12
Architecturearm64–
CPU makerAWSIntel
Sustained clock2.7 GHz3.9 GHz
BurstableNoNo
MemoryAll 1 matchdb.m8g.48xlargedb.m8i.48xlarge
Memory (GiB)768768
Networking2 of 2 differdb.m8g.48xlargedb.m8i.48xlarge
Network baseline50 Gbps75 Gbps
Network peak50 Gbps75 Gbps
Storage4 of 6 differdb.m8g.48xlargedb.m8i.48xlarge
EBS baseline bandwidth40,000 Mbps60,000 Mbps
EBS max bandwidth40,000 Mbps60,000 Mbps
EBS baseline throughput5,000 MB/s7,500 MB/s
EBS max throughput5,000 MB/s7,500 MB/s
EBS baseline IOPS240,000240,000
EBS max IOPS240,000240,000
Instance details1 of 2 differdb.m8g.48xlargedb.m8i.48xlarge
Familym8gm8i
Normalization factor384384
Other1 of 1 differdb.m8g.48xlargedb.m8i.48xlarge
Hardware Basism8g.48xlargem8i.48xlarge

On-demand prices by region

Cheapest for db.m8g.48xlarge first. PostgreSQL, USD per hour.

Regiondb.m8g.48xlargedb.m8i.48xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$16.128$17.94▲ 11%
US East (Ohio)us-east-2$16.128$17.94▲ 11%
US West (Oregon)us-west-2$16.128$17.94▲ 11%
EU (Ireland)eu-west-1$17.856$19.858▲ 11%
Europe (Spain)eu-south-2$17.856$19.86▲ 11%
Canada West (Calgary)ca-west-1$17.868$19.76▲ 11%
US West (N. California)us-west-1$18.432$20.46▲ 11%
EU (London)eu-west-2$18.72$20.765▲ 11%
EU (Paris)eu-west-3$18.72$20.76▲ 11%
Asia Pacific (Malaysia)ap-southeast-5$19.104$22.23▲ 16%
EU (Frankfurt)eu-central-1$19.20$21.37▲ 11%
Africa (Cape Town)af-south-1$21.284$23.81▲ 12%
Asia Pacific (Tokyo)ap-northeast-1$22.464$24.90▲ 11%
Asia Pacific (Singapore)ap-southeast-1$22.484$24.90▲ 11%
Asia Pacific (Sydney)ap-southeast-2$22.484$24.90▲ 11%
Asia Pacific (Seoul)ap-northeast-2$22.502$24.90▲ 11%
Asia Pacific (Mumbai)ap-south-1$22.992$25.50▲ 11%
Asia Pacific (Hyderabad)ap-south-2$23.04$25.51▲ 11%
South America (Sao Paulo)sa-east-1$25.643$23.49▼ 8%

Keep exploring

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

db.m8g.48xlargem8g family
db.m8g.48xlarge prices and specsEvery size in the m8g family

Compare db.m8g.48xlarge with

db.r8g.48xlargedb.m8a.48xlargedb.m8gd.48xlargedb.m9g.48xlarge
db.m8i.48xlargem8i family
db.m8i.48xlarge prices and specsEvery size in the m8i family

Compare db.m8i.48xlarge with

db.r8i.48xlargedb.m8a.48xlargedb.m7i.48xlarge

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.