db.r6g.4xlargevsdb.r8g.4xlarge

db.r6g.4xlarge is 5% cheaper than db.r8g.4xlarge on demand in US East (N. Virginia), saving $75.34 a month.

At a glancedb.r6g.4xlargedb.r8g.4xlarge
On-demand$2.105/hr5% less$2.208/hr
Size16 vCPUs, 128 GiB16 vCPUs, 128 GiB
ProcessorAWS Graviton2AWS Graviton4
Architecturearm64arm64

Prices in US East (N. Virginia)

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

Optiondb.r6g.4xlargedb.r8g.4xlargedb.r8g.4xlarge vs db.r6g.4xlarge
On-demandPay by the hour$2.105$2.208▲ 5%
1-yr savings planHourly commitment—20% off$1.767—

Key differences

The biggest lead each one has.

Where db.r6g.4xlarge leads
On-demand price$2.105 vs $2.208 per hour
5% cheaper
Clock speedUp to 3.1 GHz vs Up to 2.8 GHz
11% higher
Where db.r8g.4xlarge leads
Network baseline7.5 Gbps vs 5 Gbps
50% higher
Sustained clock2.8 GHz vs 2.5 GHz
12% higher

Specs

8 of 18 specs differ. Those are in bold.

Compute3 of 9 differdb.r6g.4xlargedb.r8g.4xlarge
vCPUs1616
Physical cores1616
Threads per core11
Architecturearm64arm64
ProcessorAWS Graviton2AWS Graviton4
CPU makerAWSAWS
Clock speedUp to 3.1 GHzUp to 2.8 GHz
Sustained clock2.5 GHz2.8 GHz
BurstableNoNo
MemoryAll 1 matchdb.r6g.4xlargedb.r8g.4xlarge
Memory (GiB)128128
Networking3 of 3 differdb.r6g.4xlargedb.r8g.4xlarge
NetworkUp to 10 GigabitUp to 15 Gigabit
Network baseline5 Gbps7.5 Gbps
Network peak10 Gbps15 Gbps
Instance details1 of 4 differdb.r6g.4xlargedb.r8g.4xlarge
Familyr6gr8g
CategoryMemory optimizedMemory optimized
Current generationYesYes
Normalization factor3232
Other1 of 1 differdb.r6g.4xlargedb.r8g.4xlarge
Hardware Basisr6g.4xlarger8g.4xlarge

On-demand prices by region

Cheapest for db.r6g.4xlarge first. Standard storage, USD per hour.

Regiondb.r6g.4xlargedb.r8g.4xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$2.105$2.208▲ 5%
US East (Ohio)us-east-2$2.105$2.208▲ 5%
US West (Oregon)us-west-2$2.105$2.208▲ 5%
EU (Stockholm)eu-north-1$2.209$2.318▲ 5%
Canada (Central)ca-central-1$2.326$2.44▲ 5%
EU (Ireland)eu-west-1$2.326$2.44▲ 5%
Europe (Spain)eu-south-2$2.326$2.44▲ 5%
Asia Pacific (Mumbai)ap-south-1$2.394$2.511▲ 5%
EU (Paris)eu-west-3$2.432$2.551▲ 5%
EU (London)eu-west-2$2.47$2.591▲ 5%
Asia Pacific (Jakarta)ap-southeast-3$2.538$2.663▲ 5%
Asia Pacific (Osaka)ap-northeast-3$2.538$2.663▲ 5%
Asia Pacific (Seoul)ap-northeast-2$2.538$2.663▲ 5%
Asia Pacific (Singapore)ap-southeast-1$2.538$2.663▲ 5%
Asia Pacific (Sydney)ap-southeast-2$2.538$2.663▲ 5%
Asia Pacific (Tokyo)ap-northeast-1$2.538$2.663▲ 5%
EU (Frankfurt)eu-central-1$2.538$2.663▲ 5%
AWS GovCloud (US-West)us-gov-west-1$2.54$2.665▲ 5%
Asia Pacific (Hong Kong)ap-east-1$2.80$2.937▲ 5%
South America (Sao Paulo)sa-east-1$4.356$4.569▲ 5%

Keep exploring

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

db.r6g.4xlargeMemory optimized, r6g family
db.r6g.4xlarge prices and specsEvery size in the r6g family

Compare db.r6g.4xlarge with

db.r6gd.4xlarge
db.r8g.4xlargeMemory optimized, r8g family
db.r8g.4xlarge prices and specsEvery size in the r8g family

Pay the committed rate, with commitment protection

The best committed rate on these two is 0–20% below on-demand. Connect your cloud accounts to unlock greater savings with commitment protection.

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Amazon DocumentDB Standard storage prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.