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Last Updated:Jul 05, 2024

This topic describes the x86 and ARM architectures that are supported by ApsaraDB RDS.

ApsaraDB RDS for MySQL and ApsaraDB RDS for PostgreSQL support both the x86 and ARM architectures. When you create an RDS instance, you can select an architecture based on your business requirements.

  • x86: Each vCPU corresponds to the hyper-thread of a processor core.

  • ARM: Each vCPU corresponds to the physical core of a processor. The ARM architecture delivers stable performance by using dedicated resources. RDS instances that run on the ARM architecture provide the same user experience as the RDS instances that run on the x86 architecture. However, the ARM architecture is more cost-effective and helps you improve efficiency.


The ARM architecture is now included in the YiTian product type. For more information, see Product types.

The following table provides a comparison between the x86 and ARM architectures.




Database engine

  • MySQL

  • PostgreSQL

  • SQL Server

  • MariaDB

  • MySQL

  • PostgreSQL

Major engine version

  • MySQL: 5.5, 5.6, 5.7, and 8.0

  • PostgreSQL: 10, 11, 12, 13, 14, and 15

  • SQL Server: 2008 R2, 2012, 2016, 2017, and 2019

  • MariaDB: 10.3

  • MySQL: 8.0

  • PostgreSQL: 13, 14, and 15


The ARM architecture provides the same features as the x86 architecture, which avoids compatibility issues.

Available instance type

RDS edition

RDS Basic Edition, RDS High-availability Edition, RDS Enterprise Edition, and RDS Cluster Edition

RDS High-availability Edition


All regions

The ARM architecture is available in the following regions: China (Hangzhou), China (Shanghai), China (Beijing), China (Zhangjiakou), China (Shenzhen), and Singapore.


The ARM architecture will be available in other regions in the future. The ApsaraDB RDS buy page displays the regions that support the ARM architecture.

Storage type

Enterprise SSD (ESSD), local SSD, and standard SSD