db.r6g.4xlargevsdb.r6i.4xlarge

db.r6g.4xlarge is 10% cheaper than db.r6i.4xlarge on demand in US East (N. Virginia), saving $147.46 a month.

At a glancedb.r6g.4xlargedb.r6i.4xlarge
On-demand$1.798/hr10% less$2.00/hr
Lowest rate$1.039/hr10% less1-yr reserved, no upfront$1.155/hr1-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.r6g.4xlargedb.r6i.4xlargedb.r6i.4xlarge vs db.r6g.4xlarge
On-demandPay by the hour$1.798$2.00▲ 11%
1-yr reservedNo upfront42% off$1.03942% off$1.155▲ 11%

Key differences

The biggest lead each one has.

Where db.r6g.4xlarge leads
On-demand price$1.798 vs $2.00 per hour
10% cheaper
Physical cores16 vs 8
2× higher
Where db.r6i.4xlarge leads
EBS max bandwidth10,000 Mbps vs 4,750 Mbps
2.1× higher
Sustained clock3.5 GHz vs 2.5 GHz
40% higher
Network baseline6.25 Gbps vs 5 Gbps
25% higher

Specs

20 of 24 specs differ. Those are in bold.

Compute6 of 8 differdb.r6g.4xlargedb.r6i.4xlarge
vCPUs1616
Physical cores168
Threads per core12
Architecturearm64–
ProcessorAWS Graviton2–
CPU makerAWSIntel
Sustained clock2.5 GHz3.5 GHz
BurstableNoNo
MemoryAll 1 matchdb.r6g.4xlargedb.r6i.4xlarge
Memory (GiB)128128
Networking3 of 3 differdb.r6g.4xlargedb.r6i.4xlarge
NetworkUp to 10 Gigabit–
Network baseline5 Gbps6.25 Gbps
Network peak10 Gbps12.5 Gbps
Storage6 of 7 differdb.r6g.4xlargedb.r6i.4xlarge
StorageEBS Only–
EBS baseline bandwidth4,750 Mbps5,000 Mbps
EBS max bandwidth4,750 Mbps10,000 Mbps
EBS baseline throughput593.75 MB/s625 MB/s
EBS max throughput593.75 MB/s1,250 MB/s
EBS baseline IOPS20,00020,000
EBS max IOPS20,00040,000
Instance details4 of 4 differdb.r6g.4xlargedb.r6i.4xlarge
Familyr6gr6i
CategoryMemory optimized–
Current generationYes–
Normalization factor6432
Other1 of 1 differdb.r6g.4xlargedb.r6i.4xlarge
Hardware Basisr6g.4xlarger6i.4xlarge

On-demand prices by region

Cheapest for db.r6g.4xlarge first. PostgreSQL, USD per hour.

Regiondb.r6g.4xlargedb.r6i.4xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$1.798$2.00▲ 11%
US East (Ohio)us-east-2$1.798$2.00▲ 11%
US West (Oregon)us-west-2$1.798$2.00▲ 11%
Asia Pacific (Malaysia)ap-southeast-5$1.84$2.04▲ 11%
Asia Pacific (Thailand)ap-southeast-7$1.84$2.04▲ 11%
EU (Stockholm)eu-north-1$1.849$2.056▲ 11%
Mexico (Central)mx-central-1$1.888$2.104▲ 11%
Asia Pacific (Taipei)ap-east-2$1.944$2.16▲ 11%
Canada (Central)ca-central-1$1.944$2.162▲ 11%
Canada West (Calgary)ca-west-1$1.944$2.162▲ 11%
EU (Ireland)eu-west-1$2.014$2.24▲ 11%
US West (N. California)us-west-1$2.014$2.24▲ 11%
Europe (Spain)eu-south-2$2.016$3.328▲ 65%
Asia Pacific (Hyderabad)ap-south-2$2.048$3.432▲ 68%
Asia Pacific (Mumbai)ap-south-1$2.05$2.28▲ 11%
EU (Milan)eu-south-1$2.112$2.352▲ 11%
EU (Paris)eu-west-3$2.112$2.352▲ 11%
EU (London)eu-west-2$2.115$2.352▲ 11%
Israel (Tel Aviv)il-central-1$2.117$2.35▲ 11%
Asia Pacific (Osaka)ap-northeast-3$2.157$2.40▲ 11%
Asia Pacific (Jakarta)ap-southeast-3$2.158$3.64▲ 69%
Asia Pacific (Melbourne)ap-southeast-4$2.158$3.64▲ 69%
Asia Pacific (Seoul)ap-northeast-2$2.158$2.40▲ 11%
Asia Pacific (Singapore)ap-southeast-1$2.158$2.40▲ 11%
Asia Pacific (Sydney)ap-southeast-2$2.158$2.40▲ 11%
Asia Pacific (Tokyo)ap-northeast-1$2.158$2.40▲ 11%
AWS GovCloud (US-East)us-gov-east-1$2.158$2.80▲ 30%
AWS GovCloud (US-West)us-gov-west-1$2.158$2.80▲ 30%
EU (Frankfurt)eu-central-1$2.194$2.44▲ 11%
Middle East (Bahrain)me-south-1$2.216$2.464▲ 11%
Middle East (UAE)me-central-1$2.216$3.661▲ 65%
Asia Pacific (New Zealand)ap-southeast-6$2.268$2.52▲ 11%
Asia Pacific (Hong Kong)ap-east-1$2.374$2.64▲ 11%
Africa (Cape Town)af-south-1$2.395$2.664▲ 11%
Europe (Zurich)eu-central-2$2.411$4.004▲ 66%
South America (Sao Paulo)sa-east-1$3.742$4.192▲ 12%

Keep exploring

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

db.r6g.4xlargeMemory optimized, r6g family
db.r6g.4xlarge prices and specsEvery size in the r6g family

Compare db.r6g.4xlarge with

db.m6g.4xlargedb.r6i.4xlarge.tpc2.mem2xdb.r6i.4xlarge.tpc2.mem3xdb.r6i.4xlarge.tpc2.mem4xdb.r6gd.4xlargedb.r6i.4xlarge.tpc2.mem8xdb.r7g.4xlarge
db.r6i.4xlarger6i family
db.r6i.4xlarge prices and specsEvery size in the r6i family

Compare db.r6i.4xlarge with

db.m6i.4xlargedb.r6id.4xlargedb.r6idn.4xlargedb.r6in.4xlargedb.r5.4xlargedb.r5.4xlarge.tpc2.mem2xdb.r5.4xlarge.tpc2.mem3xdb.r5.4xlarge.tpc2.mem4xdb.r7i.4xlargedb.r7i.4xlarge.tpc2.mem2xdb.r7i.4xlarge.tpc2.mem3xdb.r7i.4xlarge.tpc2.mem4x

Pay the committed rate, with commitment protection

The best committed rate on these two is 42% 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.