db.m4.xlargevsdb.r4.xlarge

db.m4.xlarge is 27% cheaper than db.r4.xlarge on demand in US East (N. Virginia), saving $98.55 a month.

At a glancedb.m4.xlargedb.r4.xlarge
On-demand$0.365/hr27% less$0.5/hr
Size4 vCPUs, 16 GiB4 vCPUs, 30.5 GiB

Prices in US East (N. Virginia)

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

Optiondb.m4.xlargedb.r4.xlargedb.r4.xlarge vs db.m4.xlarge
On-demandPay by the hour$0.365$0.5▲ 37%

Key differences

The biggest lead each one has.

Where db.m4.xlarge leads
On-demand price$0.365 vs $0.5 per hour
27% cheaper
Sustained clock2.4 GHz vs 2.3 GHz
4% higher
Where db.r4.xlarge leads
Network peak10 Gbps vs 2.8 Gbps
3.6× higher
Memory (GiB)30.5 vs 16
91% higher
EBS baseline bandwidth850 Mbps vs 750 Mbps
13% higher

Specs

10 of 18 specs differ. Those are in bold.

Compute1 of 6 differdb.m4.xlargedb.r4.xlarge
vCPUs44
Physical cores22
Threads per core22
CPU makerIntelIntel
Sustained clock2.4 GHz2.3 GHz
BurstableNoNo
Memory1 of 1 differdb.m4.xlargedb.r4.xlarge
Memory (GiB)1630.5
Networking2 of 2 differdb.m4.xlargedb.r4.xlarge
Network baseline0.75 Gbps1.25 Gbps
Network peak2.8 Gbps10 Gbps
Storage4 of 6 differdb.m4.xlargedb.r4.xlarge
EBS baseline bandwidth750 Mbps850 Mbps
EBS max bandwidth750 Mbps850 Mbps
EBS baseline throughput93.75 MB/s106.25 MB/s
EBS max throughput93.75 MB/s106.25 MB/s
EBS baseline IOPS6,0006,000
EBS max IOPS6,0006,000
Instance details1 of 2 differdb.m4.xlargedb.r4.xlarge
Familym4r4
Normalization factor88
Other1 of 1 differdb.m4.xlargedb.r4.xlarge
Hardware Basism4.xlarger4.xlarge

On-demand prices by region

Cheapest for db.m4.xlarge first. PostgreSQL, USD per hour.

Regiondb.m4.xlargedb.r4.xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$0.365$0.5▲ 37%
US East (Ohio)us-east-2$0.365$0.5▲ 37%
US West (Oregon)us-west-2$0.365$0.5▲ 37%
Canada (Central)ca-central-1$0.402$0.5405▲ 34%
EU (Ireland)eu-west-1$0.403$0.56▲ 39%
EU (Paris)eu-west-3$0.405$0.588▲ 45%
EU (London)eu-west-2$0.423$0.588▲ 39%
US West (N. California)us-west-1$0.426$0.56▲ 31%
EU (Frankfurt)eu-central-1$0.435$0.61▲ 40%
AWS GovCloud (US-West)us-gov-west-1$0.436$0.602▲ 38%
South America (Sao Paulo)sa-east-1$0.477$1.047▲ 119%
Asia Pacific (Seoul)ap-northeast-2$0.504$0.6▲ 19%
Asia Pacific (Sydney)ap-southeast-2$0.513$0.6▲ 17%
Asia Pacific (Mumbai)ap-south-1$0.514$0.57▲ 11%
Asia Pacific (Tokyo)ap-northeast-1$0.53$0.6▲ 13%
Asia Pacific (Osaka)ap-northeast-3$0.531$0.6▲ 13%
Asia Pacific (Singapore)ap-southeast-1$0.542$0.6▲ 11%

Keep exploring

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

db.m4.xlargem4 family
db.m4.xlarge prices and specsEvery size in the m4 family

Compare db.m4.xlarge with

db.t3.xlargedb.t2.xlargedb.m3.xlargedb.m5.xlarge
db.r4.xlarger4 family
db.r4.xlarge prices and specsEvery size in the r4 family

Compare db.r4.xlarge with

db.r3.xlargedb.r5.xlargedb.r5.xlarge.tpc2.mem2xdb.r5.xlarge.tpc2.mem4x

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AWS RDS PostgreSQL prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.