db.r7g.8xlargevsdb.r7i.8xlarge.tpc2.mem3x

db.r7g.8xlarge is 68% cheaper than db.r7i.8xlarge.tpc2.mem3x on demand in US East (N. Virginia), saving $5,967.75 a month.

At a glancedb.r7g.8xlargedb.r7i.8xlarge.tpc2.mem3x
On-demand$3.825/hr68% less$12.00/hr
Lowest rate$2.945/hr63% less1-yr reserved, no upfront$8.04/hr1-yr reserved, no upfront
Size32 vCPUs, 256 GiB32 vCPUs, 768 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.8xlargedb.r7i.8xlarge.tpc2.mem3xdb.r7i.8xlarge.tpc2.mem3x vs db.r7g.8xlarge
On-demandPay by the hour$3.825$12.00▲ 214%
1-yr reservedNo upfront23% off$2.94533% off$8.04▲ 173%
1-yr savings planHourly commitment20% off$3.0620% off$9.60▲ 214%

Key differences

The biggest lead each one has.

Where db.r7g.8xlarge leads
On-demand price$3.825 vs $12.00 per hour
68% cheaper
Where db.r7i.8xlarge.tpc2.mem3x leads
Memory (GiB)768 vs 256
3× higher

Specs

20 of 24 specs differ. Those are in bold.

Compute7 of 8 differdb.r7g.8xlargedb.r7i.8xlarge.tpc2.mem3x
vCPUs3232
Physical cores32–
Threads per core1–
Architecturearm64–
ProcessorAWS Graviton3–
CPU makerAWS–
Sustained clock2.6 GHz–
BurstableNo–
Memory1 of 1 differdb.r7g.8xlargedb.r7i.8xlarge.tpc2.mem3x
Memory (GiB)256768
Networking3 of 3 differdb.r7g.8xlargedb.r7i.8xlarge.tpc2.mem3x
Network15 Gigabit37.5 Gbps
Network baseline15 Gbps–
Network peak15 Gbps–
Storage6 of 7 differdb.r7g.8xlargedb.r7i.8xlarge.tpc2.mem3x
StorageEBS OnlyEBS Only
EBS baseline bandwidth10,000 Mbps–
EBS max bandwidth10,000 Mbps–
EBS baseline throughput1,250 MB/s–
EBS max throughput1,250 MB/s–
EBS baseline IOPS40,000–
EBS max IOPS40,000–
Instance details2 of 4 differdb.r7g.8xlargedb.r7i.8xlarge.tpc2.mem3x
Familyr7gr7i
CategoryMemory optimizedMemory optimized
Current generationYesYes
Normalization factor128384
Other1 of 1 differdb.r7g.8xlargedb.r7i.8xlarge.tpc2.mem3x
Hardware Basisr7g.8xlarge–

On-demand prices by region

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

Regiondb.r7g.8xlargedb.r7i.8xlarge.tpc2.mem3xDifference
US East (N. Virginia)Used in summaryus-east-1$3.825$12.00▲ 214%
US East (Ohio)us-east-2$3.825$12.00▲ 214%
US West (Oregon)us-west-2$3.825$12.00▲ 214%
Asia Pacific (Malaysia)ap-southeast-5$3.904$12.24▲ 214%
Asia Pacific (Thailand)ap-southeast-7$3.904$12.24▲ 214%
EU (Stockholm)eu-north-1$3.926$12.336▲ 214%
Mexico (Central)mx-central-1$4.016$12.624▲ 214%
Asia Pacific (Taipei)ap-east-2$4.128$12.96▲ 214%
Canada (Central)ca-central-1$4.131$12.96▲ 214%
US West (N. California)us-west-1$4.285$13.44▲ 214%
EU (Ireland)eu-west-1$4.286$13.44▲ 214%
Asia Pacific (Mumbai)ap-south-1$4.352$13.68▲ 214%
EU (London)eu-west-2$4.488$14.112▲ 214%
EU (Milan)eu-south-1$4.488$14.112▲ 214%
Asia Pacific (Singapore)ap-southeast-1$4.59$14.40▲ 214%
Asia Pacific (Sydney)ap-southeast-2$4.59$14.40▲ 214%
Asia Pacific (Tokyo)ap-northeast-1$4.59$14.40▲ 214%
Asia Pacific (Seoul)ap-northeast-2$4.59$14.40▲ 214%
AWS GovCloud (US-East)us-gov-east-1$4.592$14.40▲ 214%
AWS GovCloud (US-West)us-gov-west-1$4.592$14.40▲ 214%
EU (Frankfurt)eu-central-1$4.658$14.64▲ 214%
EU (Paris)eu-west-3$5.088$14.112▲ 177%
South America (Sao Paulo)sa-east-1$6.082$19.08▲ 214%

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.r6g.8xlargedb.r8g.8xlarge
db.r7i.8xlarge.tpc2.mem3xMemory optimized, r7i family
db.r7i.8xlarge.tpc2.mem3x prices and specsEvery size in the r7i family

Compare db.r7i.8xlarge.tpc2.mem3x with

db.m7i.8xlargedb.r6i.8xlargedb.r6i.8xlarge.tpc2.mem3xdb.r6i.8xlarge.tpc2.mem4xdb.r8i.8xlarge

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.