db.m8gd.xlargevsdb.r8gd.xlarge

db.m8gd.xlarge is 28% cheaper than db.r8gd.xlarge on demand in US East (N. Virginia), saving $110.08 a month.

At a glancedb.m8gd.xlargedb.r8gd.xlarge
On-demand$0.3952/hr28% less$0.546/hr
Lowest rate$0.3162/hr28% less1-yr savings plan, hourly commitment$0.4368/hr1-yr savings plan, hourly commitment
Size4 vCPUs, 16 GiB4 vCPUs, 32 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.m8gd.xlargedb.r8gd.xlargedb.r8gd.xlarge vs db.m8gd.xlarge
On-demandPay by the hour$0.3952$0.546▲ 38%
1-yr savings planHourly commitment20% off$0.316220% off$0.4368▲ 38%

Key differences

The biggest lead each one has.

Where db.m8gd.xlarge leads
On-demand price$0.3952 vs $0.546 per hour
28% cheaper
Where db.r8gd.xlarge leads
Memory (GiB)32 vs 16
2× higher

Specs

8 of 24 specs differ. Those are in bold.

ComputeAll 7 matchdb.m8gd.xlargedb.r8gd.xlarge
vCPUs44
Physical cores44
Threads per core11
Architecturearm64arm64
CPU makerAWSAWS
Sustained clock2.8 GHz2.8 GHz
BurstableNoNo
Memory1 of 1 differdb.m8gd.xlargedb.r8gd.xlarge
Memory (GiB)1632
Networking1 of 3 differdb.m8gd.xlargedb.r8gd.xlarge
NetworkUp to 15 Gigabit–
Network baseline1.875 Gbps1.875 Gbps
Network peak12.5 Gbps12.5 Gbps
Storage1 of 8 differdb.m8gd.xlargedb.r8gd.xlarge
Storage1 x 237 NVMe SSD–
Local disks1 × 237 GB SSD1 × 237 GB SSD
EBS baseline bandwidth1,250 Mbps1,250 Mbps
EBS max bandwidth10,000 Mbps10,000 Mbps
EBS baseline throughput156.25 MB/s156.25 MB/s
EBS max throughput1,250 MB/s1,250 MB/s
EBS baseline IOPS6,0006,000
EBS max IOPS40,00040,000
Instance details4 of 4 differdb.m8gd.xlargedb.r8gd.xlarge
Familym8gdr8gd
CategoryMemory optimized–
Current generationYes–
Normalization factor168
Other1 of 1 differdb.m8gd.xlargedb.r8gd.xlarge
Hardware Basism8gd.xlarger8gd.xlarge

On-demand prices by region

Cheapest for db.m8gd.xlarge first. PostgreSQL, USD per hour.

Regiondb.m8gd.xlargedb.r8gd.xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$0.3952$0.546▲ 38%
US East (Ohio)us-east-2$0.3952$0.546▲ 38%
US West (Oregon)us-west-2$0.3952$0.546▲ 38%
Europe (Spain)eu-south-2$0.4354$0.6402▲ 47%
Canada (Central)ca-central-1$0.455$0.5904▲ 30%
EU (Ireland)eu-west-1$0.456$0.6084▲ 33%
Asia Pacific (Malaysia)ap-southeast-5$0.468$0.558▲ 19%
EU (Frankfurt)eu-central-1$0.474$0.6606▲ 39%
EU (London)eu-west-2$0.481$0.6406▲ 33%
Asia Pacific (Tokyo)ap-northeast-1$0.5528$0.657▲ 19%
Asia Pacific (Sydney)ap-southeast-2$0.587$0.6612▲ 13%
South America (Sao Paulo)sa-east-1$0.628$0.868▲ 38%

Keep exploring

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

db.m8gd.xlargeMemory optimized, m8gd family
db.m8gd.xlarge prices and specsEvery size in the m8gd family

Compare db.m8gd.xlarge with

db.m8g.xlargedb.t4g.xlargedb.m6gd.xlarge
db.r8gd.xlarger8gd family
db.r8gd.xlarge prices and specsEvery size in the r8gd family

Compare db.r8gd.xlarge with

db.r8g.xlargedb.r6gd.xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 20% 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.