db.r8g.48xlargevsdb.r8gd.48xlarge

db.r8g.48xlarge is 12% cheaper than db.r8gd.48xlarge on demand in US East (N. Virginia), saving $2,382.72 a month.

At a glancedb.r8g.48xlargedb.r8gd.48xlarge
On-demand$22.944/hr12% less$26.208/hr
Lowest rate$18.355/hr12% less1-yr savings plan, hourly commitment$20.966/hr1-yr savings plan, hourly commitment
Size192 vCPUs, 1536 GiB192 vCPUs, 1536 GiB
Architecturearm64arm64

Prices in US East (N. Virginia)

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

Optiondb.r8g.48xlargedb.r8gd.48xlargedb.r8gd.48xlarge vs db.r8g.48xlarge
On-demandPay by the hour$22.944$26.208▲ 14%
1-yr reservedNo upfront33% off$15.372——
3-yr reservedNo upfront53% off$10.784——
1-yr savings planHourly commitment20% off$18.35520% off$20.966▲ 14%

Key differences

The biggest lead each one has.

Where db.r8g.48xlarge leads
On-demand price$22.944 vs $26.208 per hour
12% cheaper
Where db.r8gd.48xlarge leads

No clear lead on the measures we compare.

Specs

6 of 25 specs differ. Those are in bold.

Compute1 of 8 differdb.r8g.48xlargedb.r8gd.48xlarge
vCPUs192192
Physical cores192192
Threads per core11
Architecturearm64arm64
ProcessorAWS Graviton4–
CPU makerAWSAWS
Sustained clock2.7 GHz2.7 GHz
BurstableNoNo
MemoryAll 1 matchdb.r8g.48xlargedb.r8gd.48xlarge
Memory (GiB)1,5361,536
Networking1 of 3 differdb.r8g.48xlargedb.r8gd.48xlarge
Network50 Gigabit50
Network baseline50 Gbps50 Gbps
Network peak50 Gbps50 Gbps
Storage2 of 8 differdb.r8g.48xlargedb.r8gd.48xlarge
StorageEBS Only6 X 1900 NVMe SSD
Local disks–6 × 1,900 GB SSD
EBS baseline bandwidth40,000 Mbps40,000 Mbps
EBS max bandwidth40,000 Mbps40,000 Mbps
EBS baseline throughput5,000 MB/s5,000 MB/s
EBS max throughput5,000 MB/s5,000 MB/s
EBS baseline IOPS240,000240,000
EBS max IOPS240,000240,000
Instance details1 of 4 differdb.r8g.48xlargedb.r8gd.48xlarge
Familyr8gr8gd
CategoryMemory optimizedMemory optimized
Current generationYesYes
Normalization factor768768
Other1 of 1 differdb.r8g.48xlargedb.r8gd.48xlarge
Hardware Basisr8g.48xlarger8gd.48xlarge

On-demand prices by region

Cheapest for db.r8g.48xlarge first. PostgreSQL, USD per hour.

Regiondb.r8g.48xlargedb.r8gd.48xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$22.944$26.208▲ 14%
US East (Ohio)us-east-2$22.944$26.208▲ 14%
US West (Oregon)us-west-2$22.944$26.208▲ 14%
Asia Pacific (Malaysia)ap-southeast-5$23.424$26.784▲ 14%
Canada (Central)ca-central-1$24.787$28.339▲ 14%
EU (Ireland)eu-west-1$25.728$29.203▲ 14%
Europe (Spain)eu-south-2$25.728$30.73▲ 19%
US West (N. California)us-west-1$25.728$29.914▲ 16%
EU (London)eu-west-2$26.928$30.749▲ 14%
Asia Pacific (Seoul)ap-northeast-2$27.542$31.258▲ 13%
Asia Pacific (Jakarta)ap-southeast-3$27.552$31.536▲ 14%
Asia Pacific (Sydney)ap-southeast-2$27.552$31.738▲ 15%
Asia Pacific (Tokyo)ap-northeast-1$27.552$31.536▲ 14%
EU (Frankfurt)eu-central-1$27.936$31.709▲ 14%
Asia Pacific (Hong Kong)ap-east-1$30.296$34.659▲ 14%
South America (Sao Paulo)sa-east-1$36.481$41.671▲ 14%

Keep exploring

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

db.r8g.48xlargeMemory optimized, r8g family
db.r8g.48xlarge prices and specsEvery size in the r8g family

Compare db.r8g.48xlarge with

db.m8g.48xlargedb.r8i.48xlargedb.r8a.48xlarge
db.r8gd.48xlargeMemory optimized, r8gd family
db.r8gd.48xlarge prices and specsEvery size in the r8gd family

Compare db.r8gd.48xlarge with

db.m8gd.48xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 20–53% 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.