db.r7g.8xlargevsdb.r8g.8xlarge

db.r8g.8xlarge is 0% cheaper than db.r7g.8xlarge on demand in US East (N. Virginia), saving $0.73 a month.

At a glancedb.r7g.8xlargedb.r8g.8xlarge
On-demand$3.825/hr$3.824/hr0% less
Lowest rate$2.945/hr1-yr reserved, no upfront$2.562/hr13% less1-yr reserved, no upfront
Size32 vCPUs, 256 GiB32 vCPUs, 256 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.8xlargedb.r8g.8xlargedb.r8g.8xlarge vs db.r7g.8xlarge
On-demandPay by the hour$3.825$3.824Same
1-yr reservedNo upfront23% off$2.94533% off$2.562▼ 13%
3-yr reservedNo upfront—53% off$1.797—
1-yr savings planHourly commitment20% off$3.0620% off$3.059Same

Key differences

The biggest lead each one has.

Where db.r7g.8xlarge leads

No clear lead on the measures we compare.

Where db.r8g.8xlarge leads
On-demand price$3.824 vs $3.825 per hour
0% cheaper
Sustained clock2.8 GHz vs 2.6 GHz
8% higher

Specs

6 of 24 specs differ. Those are in bold.

Compute2 of 8 differdb.r7g.8xlargedb.r8g.8xlarge
vCPUs3232
Physical cores3232
Threads per core11
Architecturearm64arm64
ProcessorAWS Graviton3AWS Graviton4
CPU makerAWSAWS
Sustained clock2.6 GHz2.8 GHz
BurstableNoNo
MemoryAll 1 matchdb.r7g.8xlargedb.r8g.8xlarge
Memory (GiB)256256
NetworkingAll 3 matchdb.r7g.8xlargedb.r8g.8xlarge
Network15 Gigabit15 Gigabit
Network baseline15 Gbps15 Gbps
Network peak15 Gbps15 Gbps
Storage1 of 7 differdb.r7g.8xlargedb.r8g.8xlarge
StorageEBS OnlyAurora IO Optimization Mode
EBS baseline bandwidth10,000 Mbps10,000 Mbps
EBS max bandwidth10,000 Mbps10,000 Mbps
EBS baseline throughput1,250 MB/s1,250 MB/s
EBS max throughput1,250 MB/s1,250 MB/s
EBS baseline IOPS40,00040,000
EBS max IOPS40,00040,000
Instance details2 of 4 differdb.r7g.8xlargedb.r8g.8xlarge
Familyr7gr8g
CategoryMemory optimizedMemory optimized
Current generationYesYes
Normalization factor12883.2
Other1 of 1 differdb.r7g.8xlargedb.r8g.8xlarge
Hardware Basisr7g.8xlarger8g.8xlarge

On-demand prices by region

Cheapest for db.r7g.8xlarge first. PostgreSQL, USD per hour.

Regiondb.r7g.8xlargedb.r8g.8xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$3.825$3.824Same
US East (Ohio)us-east-2$3.825$3.824Same
US West (Oregon)us-west-2$3.825$3.824Same
Asia Pacific (Malaysia)ap-southeast-5$3.904$3.904Same
EU (Stockholm)eu-north-1$3.926$3.92Same
Mexico (Central)mx-central-1$4.016$4.016Same
Canada (Central)ca-central-1$4.131$4.131Same
Europe (Spain)eu-south-2$4.285$4.288Same
US West (N. California)us-west-1$4.285$4.288Same
EU (Ireland)eu-west-1$4.286$4.288Same
Asia Pacific (Hyderabad)ap-south-2$4.352$4.352Same
Asia Pacific (Mumbai)ap-south-1$4.352$4.352Same
EU (London)eu-west-2$4.488$4.488Same
Asia Pacific (Singapore)ap-southeast-1$4.59$4.592Same
Asia Pacific (Sydney)ap-southeast-2$4.59$4.592Same
Asia Pacific (Tokyo)ap-northeast-1$4.59$4.592Same
Asia Pacific (Seoul)ap-northeast-2$4.59$4.59Same
Asia Pacific (Jakarta)ap-southeast-3$4.592$4.592Same
Asia Pacific (Osaka)ap-northeast-3$4.592$4.592Same
AWS GovCloud (US-East)us-gov-east-1$4.592$4.592Same
AWS GovCloud (US-West)us-gov-west-1$4.592$4.592Same
EU (Frankfurt)eu-central-1$4.658$4.656Same
Asia Pacific (Hong Kong)ap-east-1$5.05$5.05Same
EU (Paris)eu-west-3$5.088$4.487▼ 12%
Europe (Zurich)eu-central-2$5.12$5.12Same
South America (Sao Paulo)sa-east-1$6.082$6.08Same

Keep exploring

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

db.r7g.8xlargeMemory optimized, r7g family
db.r7g.8xlarge prices and specsEvery size in the r7g family

Compare db.r7g.8xlarge with

db.m7g.8xlargedb.r7i.8xlargedb.r7i.8xlarge.tpc2.mem2xdb.r7i.8xlarge.tpc2.mem3xdb.r6g.8xlarge
db.r8g.8xlargeMemory optimized, r8g family
db.r8g.8xlarge prices and specsEvery size in the r8g family

Compare db.r8g.8xlarge with

db.m8g.8xlargedb.r8gd.8xlargedb.r8i.8xlargedb.r8a.8xlarge

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.

Connect AWS account

AWS RDS PostgreSQL prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.