db.r7g.xlargevsdb.r8g.xlarge

db.r7g.xlarge and db.r8g.xlarge cost the same on demand in US East (N. Virginia), $0.478 per hour.

At a glancedb.r7g.xlargedb.r8g.xlarge
On-demand$0.478/hr$0.478/hr
Lowest rate$0.3682/hr1-yr reserved, no upfront$0.32/hr13% less1-yr reserved, no upfront
Size4 vCPUs, 32 GiB4 vCPUs, 32 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.r7g.xlargedb.r8g.xlargedb.r8g.xlarge vs db.r7g.xlarge
On-demandPay by the hour$0.478$0.478Same
1-yr reservedNo upfront23% off$0.368233% off$0.32▼ 13%
3-yr reservedNo upfront—53% off$0.2246—
1-yr savings planHourly commitment20% off$0.382420% off$0.3824Same

Key differences

The biggest lead each one has.

Where db.r7g.xlarge leads
Network baseline1.876 Gbps vs 1.875 Gbps
0% higher
Where db.r8g.xlarge leads
Sustained clock2.8 GHz vs 2.6 GHz
8% higher

Specs

4 of 19 specs differ. Those are in bold.

Compute1 of 7 differdb.r7g.xlargedb.r8g.xlarge
vCPUs44
Physical cores44
Threads per core11
Architecturearm64arm64
CPU makerAWSAWS
Sustained clock2.6 GHz2.8 GHz
BurstableNoNo
MemoryAll 1 matchdb.r7g.xlargedb.r8g.xlarge
Memory (GiB)3232
Networking1 of 2 differdb.r7g.xlargedb.r8g.xlarge
Network baseline1.876 Gbps1.875 Gbps
Network peak12.5 Gbps12.5 Gbps
StorageAll 6 matchdb.r7g.xlargedb.r8g.xlarge
EBS baseline bandwidth1,250 Mbps1,250 Mbps
EBS max bandwidth10,000 Mbps10,000 Mbps
EBS baseline throughput156.25 MB/s156.25 MB/s
EBS max throughput1,250 MB/s1,250 MB/s
EBS baseline IOPS6,0006,000
EBS max IOPS40,00040,000
Instance details1 of 2 differdb.r7g.xlargedb.r8g.xlarge
Familyr7gr8g
Normalization factor88
Other1 of 1 differdb.r7g.xlargedb.r8g.xlarge
Hardware Basisr7g.xlarger8g.xlarge

On-demand prices by region

Cheapest for db.r7g.xlarge first. PostgreSQL, USD per hour.

Regiondb.r7g.xlargedb.r8g.xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$0.478$0.478Same
US East (Ohio)us-east-2$0.478$0.478Same
US West (Oregon)us-west-2$0.478$0.478Same
Asia Pacific (Malaysia)ap-southeast-5$0.488$0.488Same
EU (Stockholm)eu-north-1$0.4908$0.49Same
Mexico (Central)mx-central-1$0.502$0.502Same
Canada (Central)ca-central-1$0.5164$0.516Same
Europe (Spain)eu-south-2$0.5356$0.536Same
US West (N. California)us-west-1$0.5356$0.536Same
EU (Ireland)eu-west-1$0.536$0.536Same
Asia Pacific (Hyderabad)ap-south-2$0.544$0.544Same
Asia Pacific (Mumbai)ap-south-1$0.544$0.544Same
EU (London)eu-west-2$0.561$0.561Same
Asia Pacific (Seoul)ap-northeast-2$0.5738$0.574Same
Asia Pacific (Jakarta)ap-southeast-3$0.574$0.574Same
Asia Pacific (Osaka)ap-northeast-3$0.574$0.574Same
Asia Pacific (Singapore)ap-southeast-1$0.574$0.574Same
Asia Pacific (Sydney)ap-southeast-2$0.574$0.574Same
Asia Pacific (Tokyo)ap-northeast-1$0.574$0.574Same
AWS GovCloud (US-East)us-gov-east-1$0.574$0.574Same
AWS GovCloud (US-West)us-gov-west-1$0.574$0.574Same
EU (Frankfurt)eu-central-1$0.582$0.582Same
Asia Pacific (Hong Kong)ap-east-1$0.631$0.631Same
EU (Paris)eu-west-3$0.636$0.561▼ 12%
Europe (Zurich)eu-central-2$0.64$0.64Same
South America (Sao Paulo)sa-east-1$0.76$0.76Same

Keep exploring

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

db.r7g.xlarger7g family
db.r7g.xlarge prices and specsEvery size in the r7g family

Compare db.r7g.xlarge with

db.m7g.xlargedb.r7i.xlargedb.r7i.xlarge.tpc2.mem2xdb.r7i.xlarge.tpc2.mem4xdb.r6g.xlarge
db.r8g.xlarger8g family
db.r8g.xlarge prices and specsEvery size in the r8g family

Compare db.r8g.xlarge with

db.m8g.xlargedb.r8gd.xlargedb.r8i.xlargedb.r8a.xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 23–53% 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.