db.r7g.12xlargevsdb.r8g.12xlarge

db.r8g.12xlarge is 0% cheaper than db.r7g.12xlarge on demand in US East (N. Virginia), saving $1.46 a month.

At a glancedb.r7g.12xlargedb.r8g.12xlarge
On-demand$5.738/hr$5.736/hr0% less
Lowest rate$4.418/hr1-yr reserved, no upfront$3.843/hr13% less1-yr reserved, no upfront
Size48 vCPUs, 384 GiB48 vCPUs, 384 GiB
ProcessorAWS Graviton3AWS Graviton4
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.12xlargedb.r8g.12xlargedb.r8g.12xlarge vs db.r7g.12xlarge
On-demandPay by the hour$5.738$5.736Same
1-yr reservedNo upfront23% off$4.41833% off$3.843▼ 13%
3-yr reservedNo upfront—53% off$2.696—
1-yr savings planHourly commitment20% off$4.5920% off$4.589Same

Key differences

The biggest lead each one has.

Where db.r7g.12xlarge leads

No clear lead on the measures we compare.

Where db.r8g.12xlarge leads
On-demand price$5.736 vs $5.738 per hour
0% cheaper
Sustained clock2.8 GHz vs 2.6 GHz
8% higher

Specs

5 of 24 specs differ. Those are in bold.

Compute2 of 8 differdb.r7g.12xlargedb.r8g.12xlarge
vCPUs4848
Physical cores4848
Threads per core11
Architecturearm64arm64
ProcessorAWS Graviton3AWS Graviton4
CPU makerAWSAWS
Sustained clock2.6 GHz2.8 GHz
BurstableNoNo
MemoryAll 1 matchdb.r7g.12xlargedb.r8g.12xlarge
Memory (GiB)384384
NetworkingAll 3 matchdb.r7g.12xlargedb.r8g.12xlarge
Network22.5 Gigabit22.5 Gigabit
Network baseline22.5 Gbps22.5 Gbps
Network peak22.5 Gbps22.5 Gbps
StorageAll 7 matchdb.r7g.12xlargedb.r8g.12xlarge
StorageEBS OnlyEBS Only
EBS baseline bandwidth15,000 Mbps15,000 Mbps
EBS max bandwidth15,000 Mbps15,000 Mbps
EBS baseline throughput1,875 MB/s1,875 MB/s
EBS max throughput1,875 MB/s1,875 MB/s
EBS baseline IOPS60,00060,000
EBS max IOPS60,00060,000
Instance details2 of 4 differdb.r7g.12xlargedb.r8g.12xlarge
Familyr7gr8g
CategoryMemory optimizedMemory optimized
Current generationYesYes
Normalization factor96192
Other1 of 1 differdb.r7g.12xlargedb.r8g.12xlarge
Hardware Basisr7g.12xlarger8g.12xlarge

On-demand prices by region

Cheapest for db.r7g.12xlarge first. PostgreSQL, USD per hour.

Regiondb.r7g.12xlargedb.r8g.12xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$5.738$5.736Same
US East (Ohio)us-east-2$5.738$5.736Same
US West (Oregon)us-west-2$5.738$5.736Same
Asia Pacific (Malaysia)ap-southeast-5$5.856$5.856Same
EU (Stockholm)eu-north-1$5.89$5.88Same
Mexico (Central)mx-central-1$6.024$6.024Same
Canada (Central)ca-central-1$6.197$6.197Same
Europe (Spain)eu-south-2$6.427$6.432Same
US West (N. California)us-west-1$6.427$6.432Same
EU (Ireland)eu-west-1$6.429$6.432Same
Asia Pacific (Hyderabad)ap-south-2$6.528$6.528Same
Asia Pacific (Mumbai)ap-south-1$6.528$6.528Same
EU (London)eu-west-2$6.732$6.732Same
Asia Pacific (Singapore)ap-southeast-1$6.885$6.888Same
Asia Pacific (Sydney)ap-southeast-2$6.885$6.888Same
Asia Pacific (Tokyo)ap-northeast-1$6.885$6.888Same
Asia Pacific (Seoul)ap-northeast-2$6.886$6.886Same
Asia Pacific (Jakarta)ap-southeast-3$6.888$6.888Same
Asia Pacific (Osaka)ap-northeast-3$6.888$6.888Same
AWS GovCloud (US-East)us-gov-east-1$6.888$6.888Same
AWS GovCloud (US-West)us-gov-west-1$6.888$6.888Same
EU (Frankfurt)eu-central-1$6.987$6.984Same
Asia Pacific (Hong Kong)ap-east-1$7.574$7.574Same
EU (Paris)eu-west-3$7.632$6.73▼ 12%
Europe (Zurich)eu-central-2$7.68$7.68Same
South America (Sao Paulo)sa-east-1$9.123$9.12Same

Keep exploring

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

db.r7g.12xlargeMemory optimized, r7g family
db.r7g.12xlarge prices and specsEvery size in the r7g family

Compare db.r7g.12xlarge with

db.m7g.12xlargedb.r7i.12xlargedb.r6g.12xlarge
db.r8g.12xlargeMemory optimized, r8g family
db.r8g.12xlarge prices and specsEvery size in the r8g family

Compare db.r8g.12xlarge with

db.m8g.12xlargedb.r8gd.12xlargedb.r8i.12xlargedb.r8a.12xlarge

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.