Which RDS instance should I choose?

Choose RDS instances based on your database needs: db.t3 or db.t4g for small applications and development, db.m5 or db.m6i for balanced production workloads, db.r5 or db.r6i for memory-intensive databases with large datasets, and db.x2iedn for extreme performance requirements. For cost savings, consider ARM-based Graviton instances (db.t4g, db.m6g, db.r6g) which typically offer better price-performance. Use CloudPrice to compare specifications and pricing for your specific database engine.

What is the cheapest RDS instance type?

The cheapest RDS instances are the smallest T-series instances like db.t4g.micro or db.t3.micro for MySQL or PostgreSQL. For production workloads, db.t3.small or db.t4g.small offer better value with burstable performance. Reserved instances can reduce costs significantly (up to 70% savings) compared to on-demand pricing. CloudPrice provides real-time pricing comparison to help you find the most cost-effective option for your database engine and region.

How much does RDS cost per month?

RDS monthly costs vary significantly by instance type, database engine, and region. Smaller instances start at tens of dollars per month, while larger production instances can cost hundreds to thousands per month. Costs include both compute (instance) and storage charges. Storage typically starts around $0.10-0.15 per GB-month for General Purpose SSD. Use CloudPrice to compare current pricing and reserved instance options to optimize your database costs.

What's the difference between RDS instance classes?

RDS instance classes serve different purposes: T-class (db.t3, db.t4g) provides burstable performance for variable workloads and development, M-class (db.m5, db.m6i) offers balanced compute and memory for general production databases, R-class (db.r5, db.r6i) delivers memory-optimized performance for large in-memory databases and caching, and X-class (db.x2iedn) provides extreme memory capacity for SAP HANA and memory-intensive enterprise applications.

Is Aurora cheaper than RDS?

Aurora typically costs more per hour for compute than standard RDS (often 20-40% higher), but can provide better overall value through improved performance and built-in features. Aurora includes automatic replication, faster failover, and better performance which can reduce your total infrastructure costs. For small databases (under 10-20GB) with simple requirements, standard RDS is usually more cost-effective. For larger, high-availability production databases, Aurora's features often justify the premium. Use CloudPrice to compare current pricing for your specific configuration.

RDS Database Pricing - Compare All MySQL, PostgreSQL, Oracle Instances

Discover and compare Amazon RDS instance specifications and pricing on a single page, covering various operating systems, payment types, and regions. Refer to the 'Best Price Region' column to identify the region where a specific instance is most cost-effective, or compare prices across different saving options. Additionally, discover alternative instances using our built-in Best Alternative Instances recommender.

The data is frequently updated from the AWS API, but may not be accurate. This site is not affiliated with Amazon or AWS. The latest update occurred on September 4, 2026 at 12:31 AM UTC

US Dollar ($)

South America (São Paulo) / sa-east-1

Per Hour

PostgreSQL

Single-AZ

On Demand

Instance Type	Instance Family	vCPU Count	Memory (GiB)	CPU Architecture	Instance Price	Best Price Region / Diff
db.m1.medium	General purpose	1	3.75	x86_64	0.1500	-20%
db.m1.small	General purpose	1	1.7	x86_64	0.0750	-20%
db.m3.medium	General purpose	1	3.75	x86_64	0.1200	-20%
db.t1.micro	Micro instances	1	0.61	x86_64	0.0350	-25%
db.t2.micro	General purpose	1	1	x86_64	0.0380	-52%
db.t2.small	General purpose	1	2	x86_64	0.0760	-52%
db.m1.large	General purpose	2	7.5	x86_64	0.3000	-18%
db.m2.xlarge	Memory optimized	2	17.1	x86_64	0.4250	-18%
db.m3.large	General purpose	2	7.5	x86_64	0.2450	-20%
db.m4.large	General purpose	2	8	x86_64	0.2390	-23%
db.m5.large	General purpose	2	8	x86_64	0.2330	-23%
db.m5d.large	General purpose	2	8	x86_64	0.2740	-23%
db.m6g.large	General purpose	2	8	arm64	0.2080	-23%
db.m6i.large	General purpose	2	8	x86_64	0.2330	-23%
db.m7g.large	General purpose	2	8	arm64	0.2210	-23%
db.m7i.large	General purpose	2	8	x86_64	0.2330	-23%
db.m8g.large	General purpose	2	8	arm64	0.2671	-37%
db.m8gd.large	Memory optimized	2	8	arm64	0.3140	-37%
db.r4.large	Memory optimized	2	15.25	x86_64	0.5235	-52%
db.r5.large	Memory optimized	2	16	x86_64	0.5240	-52%
db.r5d.large	Memory optimized	2	16	x86_64	0.5940	-51%
db.r6g.large	Memory optimized	2	16	arm64	0.4680	-51%
db.r6i.large	Memory optimized	2	16	x86_64	0.5240	-52%
db.r7g.large	Memory optimized	2	16	arm64	0.3800	-37%
db.r7i.large	Memory optimized	2	16	x86_64	0.3975	-37%
db.r8g.large	Memory optimized	2	16	arm64	0.3800	-37%
db.r8gd.large	Memory optimized	2	16	arm64	0.4340	-37%
db.t2.large	General purpose	2	8	x86_64	0.3020	-51%
db.t2.medium	General purpose	2	4	x86_64	0.1510	-51%
db.t3.large	General purpose	2	8	x86_64	0.3020	-51%
db.t3.medium	General purpose	2	4	x86_64	0.1510	-52%
db.t3.micro	General purpose	2	1	x86_64	0.0380	-52%
db.t3.small	General purpose	2	2	x86_64	0.0760	-52%
db.t4g.large	General purpose	2	8	arm64	0.2750	-53%
db.t4g.medium	General purpose	2	4	arm64	0.1370	-52%
db.t4g.micro	General purpose	2	1	arm64	0.0340	-52%
db.t4g.small	General purpose	2	2	arm64	0.0690	-53%
db.m1.xlarge	General purpose	4	15	x86_64	0.6050	-19%
db.m2.2xlarge	Memory optimized	4	34.2	x86_64	0.8450	-18%
db.m3.xlarge	General purpose	4	15	x86_64	0.4900	-20%
db.m4.xlarge	General purpose	4	16	x86_64	0.4770	-23%
db.m5.xlarge	General purpose	4	16	x86_64	0.4660	-23%
db.m5d.xlarge	General purpose	4	16	x86_64	0.5480	-23%
db.m6g.xlarge	General purpose	4	16	arm64	0.4160	-23%
db.m6i.xlarge	General purpose	4	16	x86_64	0.4660	-23%
db.m7g.xlarge	General purpose	4	16	arm64	0.4420	-23%
db.m7i.2xlarge	General purpose	4	32	x86_64	0.9320	-23%
db.m7i.xlarge	General purpose	4	16	x86_64	0.4660	-23%
db.m8g.xlarge	General purpose	4	16	arm64	0.5342	-37%
db.m8gd.xlarge	Memory optimized	4	16	arm64	0.6280	-37%
db.r4.xlarge	Memory optimized	4	30.5	x86_64	1.0470	-52%
db.r5.xlarge	Memory optimized	4	32	x86_64	1.0470	-52%
db.r5d.xlarge	Memory optimized	4	32	x86_64	1.1890	-51%
db.r6g.xlarge	Memory optimized	4	32	arm64	0.9350	-51%
db.r6i.xlarge	Memory optimized	4	32	x86_64	1.0480	-52%
db.r7g.xlarge	Memory optimized	4	32	arm64	0.7600	-37%
db.r7i.xlarge	Memory optimized	4	32	x86_64	0.7950	-37%
db.r8g.xlarge	Memory optimized	4	32	arm64	0.7600	-37%
db.r8gd.xlarge	Memory optimized	4	32	arm64	0.8680	-37%
db.t2.xlarge	General purpose	4	16	x86_64	0.6040	-51%
db.t3.xlarge	General purpose	4	16	x86_64	0.6040	-51%
db.t4g.xlarge	General purpose	4	16	arm64	0.5500	-53%
db.m2.4xlarge	Memory optimized	8	68.4	x86_64	1.7000	-18%
db.m3.2xlarge	General purpose	8	30	x86_64	0.9800	-20%
db.m4.2xlarge	General purpose	8	32	x86_64	0.9540	-23%
db.m5.2xlarge	General purpose	8	32	x86_64	0.9320	-23%
db.m5d.2xlarge	General purpose	8	32	x86_64	1.0960	-23%
db.m6g.2xlarge	General purpose	8	32	arm64	0.8330	-23%
db.m6i.2xlarge	General purpose	8	32	x86_64	0.9320	-23%
db.m7g.2xlarge	General purpose	8	32	arm64	0.8840	-23%
db.m7i.4xlarge	General purpose	8	64	x86_64	1.8640	-23%
db.m8g.2xlarge	General purpose	8	32	arm64	1.0685	-37%
db.m8gd.2xlarge	Memory optimized	8	32	arm64	1.2570	-37%
db.r4.2xlarge	Memory optimized	8	61	x86_64	2.0940	-52%
db.r5.2xlarge	Memory optimized	8	64	x86_64	2.0940	-52%
db.r5d.2xlarge	Memory optimized	8	64	x86_64	2.3780	-51%
db.r6g.2xlarge	Memory optimized	8	64	arm64	1.8710	-51%
db.r6i.2xlarge	Memory optimized	8	64	x86_64	2.0960	-52%
db.r7g.2xlarge	Memory optimized	8	64	arm64	1.5200	-37%
db.r7i.2xlarge	Memory optimized	8	64	x86_64	1.5900	-37%
db.r8g.2xlarge	Memory optimized	8	64	arm64	1.5200	-37%
db.r8gd.2xlarge	Memory optimized	8	64	arm64	1.7360	-37%
db.t2.2xlarge	General purpose	8	32	x86_64	1.2080	-51%
db.t3.2xlarge	General purpose	8	32	x86_64	1.2080	-52%
db.t4g.2xlarge	General purpose	8	32	arm64	1.0990	-52%
db.m4.4xlarge	General purpose	16	64	x86_64	1.9080	-23%
db.m5.4xlarge	General purpose	16	64	x86_64	1.8640	-23%
db.m5d.4xlarge	General purpose	16	64	x86_64	2.1930	-23%
db.m6g.4xlarge	General purpose	16	64	arm64	1.6650	-23%
db.m6i.4xlarge	General purpose	16	64	x86_64	1.8640	-23%
db.m7g.4xlarge	General purpose	16	64	arm64	1.7680	-23%
db.m8g.4xlarge	General purpose	16	64	arm64	2.1370	-37%
db.m8gd.4xlarge	Memory optimized	16	64	arm64	2.5140	-37%
db.r3.4xlarge	Memory optimized	16	122	x86_64	4.1880	-52%
db.r4.4xlarge	Memory optimized	16	122	x86_64	4.1880	-52%
db.r5.4xlarge	Memory optimized	16	128	x86_64	4.1880	-52%
db.r5d.4xlarge	Memory optimized	16	128	x86_64	4.7550	-51%
db.r6g.4xlarge	Memory optimized	16	128	arm64	3.7420	-51%
db.r6i.4xlarge	Memory optimized	16	128	x86_64	4.1920	-52%
db.r7g.4xlarge	Memory optimized	16	128	arm64	3.0417	-37%
db.r7i.4xlarge	Memory optimized	16	128	x86_64	3.1800	-37%
db.r7i.8xlarge	Memory optimized	16	256	x86_64	6.3600	-37%
db.r8g.4xlarge	Memory optimized	16	128	arm64	3.0401	-37%
db.r8gd.4xlarge	Memory optimized	16	128	arm64	3.4730	-37%
db.m5.8xlarge	General purpose	32	128	x86_64	3.7280	-23%
db.m5d.8xlarge	General purpose	32	128	x86_64	4.3860	-23%
db.m6g.8xlarge	General purpose	32	128	arm64	3.3300	-23%
db.m6i.8xlarge	General purpose	32	128	x86_64	3.7280	-23%
db.m7g.8xlarge	General purpose	32	128	arm64	3.5360	-23%
db.m7i.8xlarge	General purpose	32	128	x86_64	3.7280	-23%
db.m8g.8xlarge	General purpose	32	128	arm64	4.2739	-37%
db.m8gd.8xlarge	Memory optimized	32	128	arm64	5.0270	-37%
db.r3.8xlarge	Memory optimized	32	244	x86_64	8.3750	-52%
db.r4.8xlarge	Memory optimized	32	244	x86_64	8.3760	-52%
db.r5.8xlarge	Memory optimized	32	256	x86_64	8.3760	-52%
db.r5d.8xlarge	Memory optimized	32	256	x86_64	9.5100	-51%
db.r6g.8xlarge	Memory optimized	32	256	arm64	7.4830	-51%
db.r6i.8xlarge	Memory optimized	32	256	x86_64	8.3840	-52%
db.r7g.8xlarge	Memory optimized	32	256	arm64	6.0818	-37%
db.r8g.8xlarge	Memory optimized	32	256	arm64	6.0802	-37%
db.r8gd.8xlarge	Memory optimized	32	256	arm64	6.9450	-37%
db.m4.10xlarge	General purpose	40	160	x86_64	4.7700	-23%
db.m5.12xlarge	General purpose	48	192	x86_64	5.5920	-23%
db.m5d.12xlarge	General purpose	48	192	x86_64	6.5790	-23%
db.m6g.12xlarge	General purpose	48	192	arm64	4.9950	-23%
db.m6i.12xlarge	General purpose	48	192	x86_64	5.5920	-23%
db.m7g.12xlarge	General purpose	48	192	arm64	5.3040	-23%
db.m7i.12xlarge	General purpose	48	192	x86_64	5.5920	-23%
db.m8g.12xlarge	General purpose	48	256	arm64	6.4109	-37%
db.m8gd.12xlarge	Memory optimized	48	192	arm64	7.5400	-37%
db.r5.12xlarge	Memory optimized	48	384	x86_64	12.5640	-52%
db.r5d.12xlarge	Memory optimized	48	384	x86_64	14.2650	-51%
db.r6g.12xlarge	Memory optimized	48	384	arm64	11.2250	-51%
db.r6i.12xlarge	Memory optimized	48	384	x86_64	12.5760	-52%
db.r7g.12xlarge	Memory optimized	48	384	arm64	9.1234	-37%
db.r7i.12xlarge	Memory optimized	48	384	x86_64	9.5400	-37%
db.r8g.12xlarge	Memory optimized	48	384	arm64	9.1202	-37%
db.r8gd.12xlarge	Memory optimized	48	384	arm64	10.4180	-37%
db.m4.16xlarge	General purpose	64	256	x86_64	7.6320	-23%
db.m5.16xlarge	General purpose	64	256	x86_64	7.4560	-23%
db.m5d.16xlarge	General purpose	64	256	x86_64	8.7720	-23%
db.m6g.16xlarge	General purpose	64	256	arm64	6.6600	-23%
db.m6i.16xlarge	General purpose	64	256	x86_64	7.4560	-23%
db.m7g.16xlarge	General purpose	64	256	arm64	7.0720	-23%
db.m7i.16xlarge	General purpose	64	256	x86_64	7.4560	-23%
db.m8g.16xlarge	General purpose	64	384	arm64	8.5478	-37%
db.m8gd.16xlarge	Memory optimized	64	256	arm64	10.0540	-37%
db.r4.16xlarge	Memory optimized	64	488	x86_64	16.7520	-52%
db.r5.16xlarge	Memory optimized	64	512	x86_64	16.7520	-52%
db.r5d.16xlarge	Memory optimized	64	512	x86_64	19.0200	-51%
db.r6g.16xlarge	Memory optimized	64	512	arm64	14.9670	-51%
db.r6i.16xlarge	Memory optimized	64	512	x86_64	16.7680	-52%
db.r7g.16xlarge	Memory optimized	64	512	arm64	12.1635	-37%
db.r7i.16xlarge	Memory optimized	64	512	x86_64	12.7200	-37%
db.r8g.16xlarge	Memory optimized	64	512	arm64	12.1603	-37%
db.r8gd.16xlarge	Memory optimized	64	512	arm64	13.8900	-37%
db.m5.24xlarge	General purpose	96	384	x86_64	11.1840	-23%
db.m5d.24xlarge	General purpose	96	384	x86_64	13.1580	-23%
db.m6i.24xlarge	General purpose	96	384	x86_64	11.1840	-23%
db.m7i.24xlarge	General purpose	96	384	x86_64	11.1840	-23%
db.m8g.24xlarge	General purpose	96	512	arm64	12.8218	-37%
db.m8gd.24xlarge	Memory optimized	96	384	arm64	15.0810	-37%
db.r5.24xlarge	Memory optimized	96	768	x86_64	25.1280	-52%
db.r5d.24xlarge	Memory optimized	96	768	x86_64	28.5310	-51%
db.r6i.24xlarge	Memory optimized	96	768	x86_64	25.1520	-52%
db.r7i.24xlarge	Memory optimized	96	768	x86_64	19.0800	-37%
db.r8g.24xlarge	Memory optimized	96	768	arm64	18.2405	-37%
db.r8gd.24xlarge	Memory optimized	96	768	arm64	20.8350	-37%
db.m6i.32xlarge	General purpose	128	512	x86_64	14.9120	-23%
db.r6i.32xlarge	Memory optimized	128	1024	x86_64	33.5360	-52%
db.m7i.48xlarge	General purpose	192	768	x86_64	22.3680	-23%
db.m8g.48xlarge	General purpose	192	768	arm64	25.6435	-37%
db.m8gd.48xlarge	Memory optimized	192	768	arm64	30.1620	-37%
db.r7i.48xlarge	Memory optimized	192	1536	x86_64	38.1600	-37%
db.r8g.48xlarge	Memory optimized	192	1536	arm64	36.4810	-37%
db.r8gd.48xlarge	Memory optimized	192	1536	arm64	41.6710	-37%

Amazon RDS Instances Comparison