db.m5.16xlargevsdb.m6i.16xlarge

db.m5.16xlarge and db.m6i.16xlarge cost the same on demand in US East (N. Virginia), $5.696 per hour.

At a glancedb.m5.16xlargedb.m6i.16xlarge
On-demand$5.696/hr$5.696/hr
Lowest rate$3.648/hr1-yr reserved, no upfront$3.648/hr1-yr reserved, no upfront
Size64 vCPUs, 256 GiB64 vCPUs, 256 GiB

Prices in US East (N. Virginia)

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

Optiondb.m5.16xlargedb.m6i.16xlargedb.m6i.16xlarge vs db.m5.16xlarge
On-demandPay by the hour$5.696$5.696Same
1-yr reservedNo upfront36% off$3.64836% off$3.648Same

Key differences

The biggest lead each one has.

Where db.m5.16xlarge leads

No clear lead on the measures we compare.

Where db.m6i.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 20 specs differ. Those are in bold.

Compute1 of 6 differdb.m5.16xlargedb.m6i.16xlarge
vCPUs6464
Physical cores3232
Threads per core22
CPU makerIntelIntel
Sustained clock3.1 GHz3.5 GHz
BurstableNoNo
MemoryAll 1 matchdb.m5.16xlargedb.m6i.16xlarge
Memory (GiB)256256
Networking2 of 2 differdb.m5.16xlargedb.m6i.16xlarge
Network baseline20 Gbps25 Gbps
Network peak20 Gbps25 Gbps
Storage7 of 7 differdb.m5.16xlargedb.m6i.16xlarge
StorageEBS 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 details3 of 3 differdb.m5.16xlargedb.m6i.16xlarge
Familym5m6i
CategoryGeneral purpose–
Normalization factor–128
Other1 of 1 differdb.m5.16xlargedb.m6i.16xlarge
Hardware Basism5.16xlargem6i.16xlarge

On-demand prices by region

Cheapest for db.m5.16xlarge first. PostgreSQL, USD per hour.

Regiondb.m5.16xlargedb.m6i.16xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$5.696$5.696Same
US East (Ohio)us-east-2$5.696$5.696Same
US West (Oregon)us-west-2$5.696$5.696Same
EU (Stockholm)eu-north-1$5.988$5.984Same
Canada (Central)ca-central-1$6.272$6.272Same
EU (Ireland)eu-west-1$6.304$6.304Same
Europe (Spain)eu-south-2$6.304$6.304Same
US West (N. California)us-west-1$6.496$6.496Same
EU (London)eu-west-2$6.592$6.592Same
EU (Paris)eu-west-3$6.592$6.592Same
EU (Milan)eu-south-1$6.619$6.616Same
Israel (Tel Aviv)il-central-1$6.62$6.619Same
EU (Frankfurt)eu-central-1$6.784$6.784Same
AWS GovCloud (US-East)us-gov-east-1$6.82$6.72▼ 1%
AWS GovCloud (US-West)us-gov-west-1$6.82$6.72▼ 1%
Middle East (Bahrain)me-south-1$6.936$6.944Same
Middle East (UAE)me-central-1$6.944$6.656▼ 4%
South America (Sao Paulo)sa-east-1$7.456$7.456Same
Europe (Zurich)eu-central-2$7.462$7.456Same
Africa (Cape Town)af-south-1$7.502$7.488Same
Asia Pacific (Jakarta)ap-southeast-3$7.904$7.904Same
Asia Pacific (Seoul)ap-northeast-2$7.904$7.904Same
Asia Pacific (Singapore)ap-southeast-1$7.904$7.904Same
Asia Pacific (Sydney)ap-southeast-2$7.904$7.904Same
Asia Pacific (Tokyo)ap-northeast-1$7.904$7.904Same
Asia Pacific (Hyderabad)ap-south-2$8.096$8.096Same
Asia Pacific (Mumbai)ap-south-1$8.096$8.096Same
Asia Pacific (Osaka)ap-northeast-3$8.294$8.288Same
Asia Pacific (Hong Kong)ap-east-1$8.694$8.694Same

Keep exploring

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

db.m5.16xlargeGeneral purpose, m5 family
db.m5.16xlarge prices and specsEvery size in the m5 family

Compare db.m5.16xlarge with

db.m5d.16xlargedb.r5.16xlargedb.m4.16xlarge
db.m6i.16xlargem6i family
db.m6i.16xlarge prices and specsEvery size in the m6i family

Compare db.m6i.16xlarge with

db.m6g.16xlargedb.r6i.16xlargedb.m6id.16xlargedb.m6idn.16xlargedb.m6in.16xlargedb.m7i.16xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 36% 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.