db.m8a.2xlargevsdb.m8i.2xlarge

db.m8i.2xlarge is 13% cheaper than db.m8a.2xlarge on demand in US East (N. Virginia), saving $80.01 a month. Per vCPU, db.m8a.2xlarge costs 43% less.

At a glance	db.m8a.2xlarge	db.m8i.2xlarge
On-demand	$0.8596/hr	$0.75/hr13% less
Lowest rate	$0.6877/hr1-yr savings plan, hourly commitment	$0.6/hr13% less1-yr savings plan, hourly commitment
Size	8 vCPUs, 32 GiB	4 vCPUs, 32 GiB

Prices in US East (N. Virginia)

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

Option	db.m8a.2xlarge	db.m8i.2xlarge	db.m8i.2xlarge vs db.m8a.2xlarge
On-demandPay by the hour	$0.8596	$0.75	▼ 13%
1-yr reservedNo upfront	—	33% off$0.5025	—
3-yr reservedNo upfront	—	53% off$0.3525	—
1-yr savings planHourly commitment	20% off$0.6877	20% off$0.6	▼ 13%

Key differences

The biggest lead each one has.

Where db.m8a.2xlarge leads

vCPUs8 vs 4

2× higher

Where db.m8i.2xlarge leads

On-demand price$0.75 vs $0.8596 per hour

13% cheaper

Specs

13 of 23 specs differ. Those are in bold.

Compute7 of 8 differ	db.m8a.2xlarge	db.m8i.2xlarge
vCPUs	8	4
Physical cores	8	4
Threads per core	1	2
Architecture	–	x86_64
Processor	–	Intel Xeon Scalable (Granite Rapids)
CPU maker	AMD	Intel
Sustained clock	4.5 GHz	3.9 GHz
Burstable	No	No

MemoryAll 1 match	db.m8a.2xlarge	db.m8i.2xlarge
Memory (GiB)	32	32

Networking1 of 3 differ	db.m8a.2xlarge	db.m8i.2xlarge
Network	–	Up to 15000 Megabit
Network baseline	3.75 Gbps	3.75 Gbps
Network peak	15 Gbps	15 Gbps

Storage1 of 7 differ	db.m8a.2xlarge	db.m8i.2xlarge
Storage	–	EBS Only
EBS baseline bandwidth	2,500 Mbps	2,500 Mbps
EBS max bandwidth	10,000 Mbps	10,000 Mbps
EBS baseline throughput	312.5 MB/s	312.5 MB/s
EBS max throughput	1,250 MB/s	1,250 MB/s
EBS baseline IOPS	12,000	12,000
EBS max IOPS	40,000	40,000

Instance details3 of 3 differ	db.m8a.2xlarge	db.m8i.2xlarge
Family	m8a	m8i
Category	–	General purpose
Current generation	–	Yes

Other1 of 1 differ	db.m8a.2xlarge	db.m8i.2xlarge
Hardware Basis	m8a.2xlarge	m8i.2xlarge

On-demand prices by region

Cheapest for db.m8a.2xlarge first. PostgreSQL, USD per hour.

Region	db.m8a.2xlarge	db.m8i.2xlarge	Difference
US East (N. Virginia)Used in summaryus-east-1	$0.8596	$0.75	▼ 13%
US East (Ohio)us-east-2	$0.8596	$0.75	▼ 13%
US West (Oregon)us-west-2	$0.8596	$0.75	▼ 13%
EU (Ireland)eu-west-1	$0.9516	$0.827	▼ 13%
Europe (Spain)eu-south-2	$0.9516	$0.83	▼ 13%
EU (Frankfurt)eu-central-1	$1.024	$0.89	▼ 13%
Asia Pacific (Tokyo)ap-northeast-1	$1.193	$1.04	▼ 13%
Asia Pacific (Hyderabad)ap-south-2	$1.222	$1.06	▼ 13%
Asia Pacific (Mumbai)ap-south-1	$1.222	$1.06	▼ 13%

Keep exploring

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

db.m8a.2xlargem8a family

db.m8a.2xlarge prices and specs Every size in the m8a family

Compare db.m8a.2xlarge with

db.m8g.2xlarge db.r8a.2xlarge

db.m8i.2xlargeGeneral purpose, m8i family

db.m8i.2xlarge prices and specs Every size in the m8i family

Compare db.m8i.2xlarge with

db.m8g.2xlarge db.r8i.2xlarge db.m7i.2xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 20–53% 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.