db.r6g.8xlargevsdb.r6i.8xlarge.tpc2.mem4x

db.r6g.8xlarge is 76% cheaper than db.r6i.8xlarge.tpc2.mem4x on demand in US East (N. Virginia), saving $8,259.95 a month. They use different processor architectures (arm64 and x86_64), so software built for one may need rebuilding to run on the other.

At a glancedb.r6g.8xlargedb.r6i.8xlarge.tpc2.mem4x
On-demand$3.597/hr76% less$14.912/hr
Lowest rate$2.078/hr81% less1-yr reserved, no upfront$10.737/hr1-yr reserved, no upfront
Size32 vCPUs, 256 GiB32 vCPUs, 1024 GiB
ProcessorAWS Graviton2Intel Xeon Scalable Ice Lake
Architecturearm64x86_64

Prices in US East (N. Virginia)

“Off” is the discount against each type’s own on-demand price. PostgreSQL, USD per hour.

Optiondb.r6g.8xlargedb.r6i.8xlarge.tpc2.mem4xdb.r6i.8xlarge.tpc2.mem4x vs db.r6g.8xlarge
On-demandPay by the hour$3.597$14.912▲ 315%
1-yr reservedNo upfront42% off$2.07828% off$10.737▲ 417%

Key differences

The biggest lead each one has.

Where db.r6g.8xlarge leads
On-demand price$3.597 vs $14.912 per hour
76% cheaper
Where db.r6i.8xlarge.tpc2.mem4x leads
Memory (GiB)1,024 vs 256
4× higher

Specs

20 of 24 specs differ. Those are in bold.

Compute7 of 8 differdb.r6g.8xlargedb.r6i.8xlarge.tpc2.mem4x
vCPUs3232
Physical cores32–
Threads per core1–
Architecturearm64x86_64
ProcessorAWS Graviton2Intel Xeon Scalable Ice Lake
CPU makerAWS–
Sustained clock2.5 GHz–
BurstableNo–
Memory1 of 1 differdb.r6g.8xlargedb.r6i.8xlarge.tpc2.mem4x
Memory (GiB)2561,024
Networking3 of 3 differdb.r6g.8xlargedb.r6i.8xlarge.tpc2.mem4x
Network10 Gigabit50 Gbps
Network baseline12 Gbps–
Network peak12 Gbps–
Storage6 of 7 differdb.r6g.8xlargedb.r6i.8xlarge.tpc2.mem4x
StorageEBS OnlyEBS Only
EBS baseline bandwidth9,500 Mbps–
EBS max bandwidth9,500 Mbps–
EBS baseline throughput1,187.5 MB/s–
EBS max throughput1,187.5 MB/s–
EBS baseline IOPS40,000–
EBS max IOPS40,000–
Instance details2 of 4 differdb.r6g.8xlargedb.r6i.8xlarge.tpc2.mem4x
Familyr6gr6i
CategoryMemory optimizedMemory optimized
Current generationYesYes
Normalization factor128512
Other1 of 1 differdb.r6g.8xlargedb.r6i.8xlarge.tpc2.mem4x
Hardware Basisr6g.8xlarge–

On-demand prices by region

Cheapest for db.r6g.8xlarge first. PostgreSQL, USD per hour.

Regiondb.r6g.8xlargedb.r6i.8xlarge.tpc2.mem4xDifference
US East (N. Virginia)Used in summaryus-east-1$3.597$14.912▲ 315%
US East (Ohio)us-east-2$3.597$14.912▲ 315%
US West (Oregon)us-west-2$3.597$14.912▲ 315%
Asia Pacific (Malaysia)ap-southeast-5$3.68$16.32▲ 343%
EU (Stockholm)eu-north-1$3.698$15.68▲ 324%
Canada (Central)ca-central-1$3.889$16.384▲ 321%
Canada West (Calgary)ca-west-1$3.889$16.384▲ 321%
EU (Ireland)eu-west-1$4.028$16.512▲ 310%
US West (N. California)us-west-1$4.028$16.448▲ 308%
Europe (Spain)eu-south-2$4.032$16.471▲ 309%
Asia Pacific (Hyderabad)ap-south-2$4.096$16.832▲ 311%
Asia Pacific (Mumbai)ap-south-1$4.10$16.832▲ 311%
EU (Milan)eu-south-1$4.224$17.344▲ 311%
EU (Paris)eu-west-3$4.224$17.344▲ 311%
EU (London)eu-west-2$4.23$17.408▲ 312%
Israel (Tel Aviv)il-central-1$4.234$17.281▲ 308%
Asia Pacific (Osaka)ap-northeast-3$4.314$17.728▲ 311%
Asia Pacific (Jakarta)ap-southeast-3$4.316$17.684▲ 310%
Asia Pacific (Melbourne)ap-southeast-4$4.316$17.645▲ 309%
Asia Pacific (Seoul)ap-northeast-2$4.316$17.728▲ 311%
Asia Pacific (Singapore)ap-southeast-1$4.316$17.728▲ 311%
Asia Pacific (Sydney)ap-southeast-2$4.316$17.664▲ 309%
Asia Pacific (Tokyo)ap-northeast-1$4.316$17.728▲ 311%
AWS GovCloud (US-East)us-gov-east-1$4.317$17.952▲ 316%
AWS GovCloud (US-West)us-gov-west-1$4.317$17.92▲ 315%
EU (Frankfurt)eu-central-1$4.388$18.048▲ 311%
Middle East (Bahrain)me-south-1$4.431$18.176▲ 310%
Middle East (UAE)me-central-1$4.432$18.176▲ 310%
Asia Pacific (Hong Kong)ap-east-1$4.748$19.501▲ 311%
Africa (Cape Town)af-south-1$4.79$19.648▲ 310%
Europe (Zurich)eu-central-2$4.822$19.804▲ 311%
South America (Sao Paulo)sa-east-1$7.483$31.104▲ 316%

Keep exploring

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

db.r6g.8xlargeMemory optimized, r6g family
db.r6g.8xlarge prices and specsEvery size in the r6g family

Compare db.r6g.8xlarge with

db.m6g.8xlargedb.r6i.8xlargedb.r6i.8xlarge.tpc2.mem3xdb.r6gd.8xlargedb.r7g.8xlarge
db.r6i.8xlarge.tpc2.mem4xMemory optimized, r6i family
db.r6i.8xlarge.tpc2.mem4x prices and specsEvery size in the r6i family

Compare db.r6i.8xlarge.tpc2.mem4x with

db.m6i.8xlargedb.r6id.8xlargedb.r6idn.8xlargedb.r6in.8xlargedb.r5.8xlargedb.r5.8xlarge.tpc2.mem3xdb.r7i.8xlargedb.r7i.8xlarge.tpc2.mem2xdb.r7i.8xlarge.tpc2.mem3x

Pay the committed rate, with commitment protection

The best committed rate on these two is 28–42% 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.