db.r7g.4xlargevsdb.r7i.4xlarge

db.r7g.4xlarge is 4% cheaper than db.r7i.4xlarge on demand in US East (N. Virginia), saving $63.51 a month.

At a glancedb.r7g.4xlargedb.r7i.4xlarge
On-demand$1.913/hr4% less$2.00/hr
Lowest rate$1.473/hr1-yr reserved, no upfront$1.34/hr9% less1-yr reserved, no upfront
Size16 vCPUs, 128 GiB16 vCPUs, 128 GiB

Prices in US East (N. Virginia)

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

Optiondb.r7g.4xlargedb.r7i.4xlargedb.r7i.4xlarge vs db.r7g.4xlarge
On-demandPay by the hour$1.913$2.00▲ 5%
1-yr reservedNo upfront23% off$1.47333% off$1.34▼ 9%
1-yr savings planHourly commitment20% off$1.5320% off$1.60▲ 5%

Key differences

The biggest lead each one has.

Where db.r7g.4xlarge leads
On-demand price$1.913 vs $2.00 per hour
4% cheaper
Physical cores16 vs 8
2× higher
Network baseline7.5 Gbps vs 6.25 Gbps
20% higher
Where db.r7i.4xlarge leads
Sustained clock3.2 GHz vs 2.6 GHz
23% higher

Specs

15 of 24 specs differ. Those are in bold.

Compute6 of 8 differdb.r7g.4xlargedb.r7i.4xlarge
vCPUs1616
Physical cores168
Threads per core12
Architecturearm64–
ProcessorAWS Graviton3–
CPU makerAWSIntel
Sustained clock2.6 GHz3.2 GHz
BurstableNoNo
MemoryAll 1 matchdb.r7g.4xlargedb.r7i.4xlarge
Memory (GiB)128128
Networking3 of 3 differdb.r7g.4xlargedb.r7i.4xlarge
NetworkUp to 15 Gigabit–
Network baseline7.5 Gbps6.25 Gbps
Network peak15 Gbps12.5 Gbps
Storage1 of 7 differdb.r7g.4xlargedb.r7i.4xlarge
StorageEBS Only–
EBS baseline bandwidth5,000 Mbps5,000 Mbps
EBS max bandwidth10,000 Mbps10,000 Mbps
EBS baseline throughput625 MB/s625 MB/s
EBS max throughput1,250 MB/s1,250 MB/s
EBS baseline IOPS20,00020,000
EBS max IOPS40,00040,000
Instance details4 of 4 differdb.r7g.4xlargedb.r7i.4xlarge
Familyr7gr7i
CategoryMemory optimized–
Current generationYes–
Normalization factor32–
Other1 of 1 differdb.r7g.4xlargedb.r7i.4xlarge
Hardware Basisr7g.4xlarger7i.4xlarge

On-demand prices by region

Cheapest for db.r7g.4xlarge first. PostgreSQL, USD per hour.

Regiondb.r7g.4xlargedb.r7i.4xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$1.913$2.00▲ 5%
US East (Ohio)us-east-2$1.913$2.00▲ 5%
US West (Oregon)us-west-2$1.913$2.00▲ 5%
Asia Pacific (Malaysia)ap-southeast-5$1.952$2.04▲ 5%
Asia Pacific (Thailand)ap-southeast-7$1.952$2.376▲ 22%
EU (Stockholm)eu-north-1$1.963$2.056▲ 5%
Mexico (Central)mx-central-1$2.008$2.104▲ 5%
Asia Pacific (Taipei)ap-east-2$2.064$2.16▲ 5%
Canada (Central)ca-central-1$2.066$2.16▲ 5%
Europe (Spain)eu-south-2$2.142$2.24▲ 5%
US West (N. California)us-west-1$2.142$2.24▲ 5%
EU (Ireland)eu-west-1$2.143$2.24▲ 5%
Asia Pacific (Hyderabad)ap-south-2$2.176$2.64▲ 21%
Asia Pacific (Mumbai)ap-south-1$2.176$2.28▲ 5%
EU (London)eu-west-2$2.244$2.352▲ 5%
EU (Milan)eu-south-1$2.244$2.352▲ 5%
Asia Pacific (Singapore)ap-southeast-1$2.295$2.40▲ 5%
Asia Pacific (Sydney)ap-southeast-2$2.295$2.40▲ 5%
Asia Pacific (Tokyo)ap-northeast-1$2.295$2.40▲ 5%
Asia Pacific (Seoul)ap-northeast-2$2.295$2.40▲ 5%
Asia Pacific (Jakarta)ap-southeast-3$2.296$2.40▲ 5%
Asia Pacific (Osaka)ap-northeast-3$2.296$2.80▲ 22%
AWS GovCloud (US-East)us-gov-east-1$2.296$2.40▲ 5%
AWS GovCloud (US-West)us-gov-west-1$2.296$2.40▲ 5%
EU (Frankfurt)eu-central-1$2.329$2.44▲ 5%
Asia Pacific (New Zealand)ap-southeast-6$2.411$2.52▲ 5%
EU (Paris)eu-west-3$2.544$2.352▼ 8%
South America (Sao Paulo)sa-east-1$3.042$3.18▲ 5%

Keep exploring

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

db.r7g.4xlargeMemory optimized, r7g family
db.r7g.4xlarge prices and specsEvery size in the r7g family

Compare db.r7g.4xlarge with

db.m7g.4xlargedb.r7i.4xlarge.tpc2.mem2xdb.r7i.4xlarge.tpc2.mem3xdb.r7i.4xlarge.tpc2.mem4xdb.r6g.4xlargedb.r8g.4xlarge
db.r7i.4xlarger7i family
db.r7i.4xlarge prices and specsEvery size in the r7i family

Compare db.r7i.4xlarge with

db.m7i.4xlargedb.r6i.4xlargedb.r6i.4xlarge.tpc2.mem2xdb.r6i.4xlarge.tpc2.mem3xdb.r6i.4xlarge.tpc2.mem4xdb.r6i.4xlarge.tpc2.mem8xdb.r8i.4xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 23–33% 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.