db.r7g.16xlargevsdb.r8g.16xlarge

db.r8g.16xlarge is 0% cheaper than db.r7g.16xlarge on demand in US East (N. Virginia), saving $1.46 a month.

At a glancedb.r7g.16xlargedb.r8g.16xlarge
On-demand$7.65/hr$7.648/hr0% less
Lowest rate$5.891/hr1-yr reserved, no upfront$5.124/hr13% less1-yr reserved, no upfront
Size64 vCPUs, 512 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.r7g.16xlargedb.r8g.16xlargedb.r8g.16xlarge vs db.r7g.16xlarge
On-demandPay by the hour$7.65$7.648Same
1-yr reservedNo upfront23% off$5.89133% off$5.124▼ 13%
3-yr reservedNo upfront—53% off$3.595—
1-yr savings planHourly commitment20% off$6.1220% off$6.118Same

Key differences

The biggest lead each one has.

Where db.r7g.16xlarge leads

No clear lead on the measures we compare.

Where db.r8g.16xlarge leads
On-demand price$7.648 vs $7.65 per hour
0% cheaper
Sustained clock2.8 GHz vs 2.6 GHz
8% higher

Specs

8 of 24 specs differ. Those are in bold.

Compute2 of 8 differdb.r7g.16xlargedb.r8g.16xlarge
vCPUs6464
Physical cores6464
Threads per core11
Architecturearm64arm64
Processor–AWS Graviton4
CPU makerAWSAWS
Sustained clock2.6 GHz2.8 GHz
BurstableNoNo
MemoryAll 1 matchdb.r7g.16xlargedb.r8g.16xlarge
Memory (GiB)512512
Networking1 of 3 differdb.r7g.16xlargedb.r8g.16xlarge
Network–30 Gigabit
Network baseline30 Gbps30 Gbps
Network peak30 Gbps30 Gbps
Storage1 of 7 differdb.r7g.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.r7g.16xlargedb.r8g.16xlarge
Familyr7gr8g
Category–Memory optimized
Current generation–Yes
Normalization factor128128
Other1 of 1 differdb.r7g.16xlargedb.r8g.16xlarge
Hardware Basisr7g.16xlarger8g.16xlarge

On-demand prices by region

Cheapest for db.r7g.16xlarge first. PostgreSQL, USD per hour.

Regiondb.r7g.16xlargedb.r8g.16xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$7.65$7.648Same
US East (Ohio)us-east-2$7.65$7.648Same
US West (Oregon)us-west-2$7.65$7.648Same
Asia Pacific (Malaysia)ap-southeast-5$7.808$7.808Same
EU (Stockholm)eu-north-1$7.853$7.84Same
Mexico (Central)mx-central-1$8.032$8.032Same
Canada (Central)ca-central-1$8.262$8.262Same
Europe (Spain)eu-south-2$8.57$8.576Same
US West (N. California)us-west-1$8.57$8.576Same
EU (Ireland)eu-west-1$8.572$8.576Same
Asia Pacific (Hyderabad)ap-south-2$8.704$8.704Same
Asia Pacific (Mumbai)ap-south-1$8.704$8.704Same
EU (London)eu-west-2$8.976$8.976Same
Asia Pacific (Singapore)ap-southeast-1$9.18$9.184Same
Asia Pacific (Sydney)ap-southeast-2$9.18$9.184Same
Asia Pacific (Tokyo)ap-northeast-1$9.18$9.184Same
Asia Pacific (Seoul)ap-northeast-2$9.181$9.181Same
Asia Pacific (Jakarta)ap-southeast-3$9.184$9.184Same
Asia Pacific (Osaka)ap-northeast-3$9.184$9.184Same
AWS GovCloud (US-East)us-gov-east-1$9.184$9.184Same
AWS GovCloud (US-West)us-gov-west-1$9.184$9.184Same
EU (Frankfurt)eu-central-1$9.316$9.312Same
Asia Pacific (Hong Kong)ap-east-1$10.099$10.099Same
EU (Paris)eu-west-3$10.176$8.974▼ 12%
Europe (Zurich)eu-central-2$10.24$10.24Same
South America (Sao Paulo)sa-east-1$12.164$12.16Same

Keep exploring

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

db.r7g.16xlarger7g family
db.r7g.16xlarge prices and specsEvery size in the r7g family

Compare db.r7g.16xlarge with

db.m7g.16xlargedb.r7i.16xlargedb.r6g.16xlarge
db.r8g.16xlargeMemory optimized, r8g family
db.r8g.16xlarge prices and specsEvery size in the r8g family

Compare db.r8g.16xlarge with

db.m8g.16xlargedb.r8gd.16xlargedb.r8i.16xlargedb.r8a.16xlarge

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.