db.r5d.4xlargevsdb.r6id.4xlarge

db.r5d.4xlarge is 4% cheaper than db.r6id.4xlarge on demand in US East (N. Virginia), saving $73.00 a month.

At a glancedb.r5d.4xlargedb.r6id.4xlarge
On-demand$2.286/hr4% less$2.386/hr
Lowest rate$1.76/hr4% less1-yr reserved, no upfront$1.837/hr1-yr reserved, no upfront
Size16 vCPUs, 128 GiB16 vCPUs, 128 GiB
ProcessorIntel Xeon Platinum 8175Intel Xeon 8375
Architecturex86_64x86_64

Prices in US East (N. Virginia)

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

Optiondb.r5d.4xlargedb.r6id.4xlargedb.r6id.4xlarge vs db.r5d.4xlarge
On-demandPay by the hour$2.286$2.386▲ 4%
1-yr reservedNo upfront23% off$1.7623% off$1.837▲ 4%

Key differences

The biggest lead each one has.

Where db.r5d.4xlarge leads
On-demand price$2.286 vs $2.386 per hour
4% cheaper
Where db.r6id.4xlarge leads
EBS max IOPS40,000 vs 18,750
2.1× higher
Network baseline6.25 Gbps vs 5 Gbps
25% higher
Sustained clock3.5 GHz vs 3.1 GHz
13% higher

Specs

15 of 25 specs differ. Those are in bold.

Compute2 of 8 differdb.r5d.4xlargedb.r6id.4xlarge
vCPUs1616
Physical cores88
Threads per core22
Architecturex86_64x86_64
ProcessorIntel Xeon Platinum 8175Intel Xeon 8375
CPU makerIntelIntel
Sustained clock3.1 GHz3.5 GHz
BurstableNoNo
MemoryAll 1 matchdb.r5d.4xlargedb.r6id.4xlarge
Memory (GiB)128128
Networking3 of 3 differdb.r5d.4xlargedb.r6id.4xlarge
NetworkUp to 10 GbpsUp to 12.5 Gbps
Network baseline5 Gbps6.25 Gbps
Network peak10 Gbps12.5 Gbps
Storage8 of 8 differdb.r5d.4xlargedb.r6id.4xlarge
Storage2 x 300 NVMe SSD1 x 950 NVMe SSD
Local disks2 × 300 GB SSD1 × 950 GB SSD
EBS baseline bandwidth4,750 Mbps5,000 Mbps
EBS max bandwidth4,750 Mbps10,000 Mbps
EBS baseline throughput593.75 MB/s625 MB/s
EBS max throughput593.75 MB/s1,250 MB/s
EBS baseline IOPS18,75020,000
EBS max IOPS18,75040,000
Instance details1 of 4 differdb.r5d.4xlargedb.r6id.4xlarge
Familyr5dr6id
CategoryMemory optimizedMemory optimized
Current generationYesYes
Normalization factor3232
Other1 of 1 differdb.r5d.4xlargedb.r6id.4xlarge
Hardware Basisr5d.4xlarger6id.4xlarge

On-demand prices by region

Cheapest for db.r5d.4xlarge first. PostgreSQL, USD per hour.

Regiondb.r5d.4xlargedb.r6id.4xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$2.286$2.386▲ 4%
US East (Ohio)us-east-2$2.286$2.386▲ 4%
US West (Oregon)us-west-2$2.286$2.386▲ 4%
EU (Ireland)eu-west-1$2.542$2.653▲ 4%
Asia Pacific (Tokyo)ap-northeast-1$2.747$2.861▲ 4%
Asia Pacific (Sydney)ap-southeast-2$2.766$2.886▲ 4%
EU (Frankfurt)eu-central-1$2.777$2.895▲ 4%

Keep exploring

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

db.r5d.4xlargeMemory optimized, r5d family
db.r5d.4xlarge prices and specsEvery size in the r5d family

Compare db.r5d.4xlarge with

db.m5d.4xlargedb.r5.4xlargedb.r5.4xlarge.tpc2.mem2xdb.r5.4xlarge.tpc2.mem3xdb.r5.4xlarge.tpc2.mem4x
db.r6id.4xlargeMemory optimized, r6id family
db.r6id.4xlarge prices and specsEvery size in the r6id family

Compare db.r6id.4xlarge with

db.r6i.4xlargedb.r6i.4xlarge.tpc2.mem2xdb.r6i.4xlarge.tpc2.mem3xdb.r6i.4xlarge.tpc2.mem4xdb.m6id.4xlargedb.r6gd.4xlargedb.r6i.4xlarge.tpc2.mem8x

Pay the committed rate, with commitment protection

The best committed rate on these two is 23% 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.