db.r5.16xlargevsdb.r6i.16xlarge

db.r5.16xlarge and db.r6i.16xlarge cost the same on demand in US East (N. Virginia), $8.00 per hour.

At a glancedb.r5.16xlargedb.r6i.16xlarge
On-demand$8.00/hr$8.00/hr
Lowest rate$4.62/hr0% less1-yr reserved, no upfront$4.621/hr1-yr reserved, no upfront
Size64 vCPUs, 512 GiB64 vCPUs, 512 GiB
ProcessorIntel Xeon Platinum 8175Intel Xeon Scalable Ice Lake
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.r5.16xlargedb.r6i.16xlargedb.r6i.16xlarge vs db.r5.16xlarge
On-demandPay by the hour$8.00$8.00Same
1-yr reservedNo upfront42% off$4.6242% off$4.621Same

Key differences

The biggest lead each one has.

Where db.r5.16xlarge leads

No clear lead on the measures we compare.

Where db.r6i.16xlarge leads
EBS baseline bandwidth20,000 Mbps vs 13,600 Mbps
47% higher
Network baseline25 Gbps vs 20 Gbps
25% higher
Sustained clock3.5 GHz vs 3.1 GHz
13% higher

Specs

14 of 25 specs differ. Those are in bold.

Compute3 of 9 differdb.r5.16xlargedb.r6i.16xlarge
vCPUs6464
Physical cores3232
Threads per core22
Architecturex86_64x86_64
ProcessorIntel Xeon Platinum 8175Intel Xeon Scalable Ice Lake
CPU makerIntelIntel
Clock speedUp to 3.1 GHz–
Sustained clock3.1 GHz3.5 GHz
BurstableNoNo
MemoryAll 1 matchdb.r5.16xlargedb.r6i.16xlarge
Memory (GiB)512512
Networking3 of 3 differdb.r5.16xlargedb.r6i.16xlarge
Network20 Gigabit25 Gbps
Network baseline20 Gbps25 Gbps
Network peak20 Gbps25 Gbps
Storage6 of 7 differdb.r5.16xlargedb.r6i.16xlarge
StorageEBS OnlyEBS Only
EBS baseline bandwidth13,600 Mbps20,000 Mbps
EBS max bandwidth13,600 Mbps20,000 Mbps
EBS baseline throughput1,700 MB/s2,500 MB/s
EBS max throughput1,700 MB/s2,500 MB/s
EBS baseline IOPS60,00080,000
EBS max IOPS60,00080,000
Instance details1 of 4 differdb.r5.16xlargedb.r6i.16xlarge
Familyr5r6i
CategoryMemory optimizedMemory optimized
Current generationYesYes
Normalization factor128128
Other1 of 1 differdb.r5.16xlargedb.r6i.16xlarge
Hardware Basisr5.16xlarger6i.16xlarge

On-demand prices by region

Cheapest for db.r5.16xlarge first. PostgreSQL, USD per hour.

Regiondb.r5.16xlargedb.r6i.16xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$8.00$8.00Same
US East (Ohio)us-east-2$8.00$8.00Same
US West (Oregon)us-west-2$8.00$8.00Same
EU (Stockholm)eu-north-1$8.228$8.224Same
Canada (Central)ca-central-1$8.648$8.65Same
EU (Ireland)eu-west-1$8.96$8.96Same
Europe (Spain)eu-south-2$8.96$13.312▲ 49%
US West (N. California)us-west-1$8.96$8.96Same
Asia Pacific (Hyderabad)ap-south-2$9.12$13.728▲ 51%
Asia Pacific (Mumbai)ap-south-1$9.12$9.12Same
EU (London)eu-west-2$9.408$9.408Same
EU (Milan)eu-south-1$9.408$9.408Same
EU (Paris)eu-west-3$9.408$9.408Same
Israel (Tel Aviv)il-central-1$9.41$9.41Same
Asia Pacific (Jakarta)ap-southeast-3$9.60$14.56▲ 52%
Asia Pacific (Melbourne)ap-southeast-4$9.60$14.56▲ 52%
Asia Pacific (Osaka)ap-northeast-3$9.60$9.60Same
Asia Pacific (Seoul)ap-northeast-2$9.60$9.60Same
Asia Pacific (Singapore)ap-southeast-1$9.60$9.60Same
Asia Pacific (Sydney)ap-southeast-2$9.60$9.60Same
Asia Pacific (Tokyo)ap-northeast-1$9.60$9.60Same
AWS GovCloud (US-East)us-gov-east-1$9.63$11.20▲ 16%
AWS GovCloud (US-West)us-gov-west-1$9.63$11.20▲ 16%
EU (Frankfurt)eu-central-1$9.76$9.76Same
Middle East (Bahrain)me-south-1$9.856$9.856Same
Middle East (UAE)me-central-1$9.856$14.643▲ 49%
Canada West (Calgary)ca-west-1$10.24$8.65▼ 16%
Asia Pacific (Hong Kong)ap-east-1$10.56$10.56Same
Africa (Cape Town)af-south-1$10.662$10.656Same
Europe (Zurich)eu-central-2$10.752$16.016▲ 49%
South America (Sao Paulo)sa-east-1$16.752$16.768Same

Keep exploring

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

db.r5.16xlargeMemory optimized, r5 family
db.r5.16xlarge prices and specsEvery size in the r5 family

Compare db.r5.16xlarge with

db.m5.16xlargedb.r5d.16xlargedb.r5b.16xlargedb.r4.16xlarge
db.r6i.16xlargeMemory optimized, r6i family
db.r6i.16xlarge prices and specsEvery size in the r6i family

Compare db.r6i.16xlarge with

db.m6i.16xlargedb.r6g.16xlargedb.r6id.16xlargedb.r6idn.16xlargedb.r6in.16xlargedb.r7i.16xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 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.