ApsaraDB RDS compute architecture types-阿里云帮助中心

This topic describes the ApsaraDB RDS compute architecture types: x86 and ARM.

ApsaraDB RDS for MySQL and ApsaraDB RDS for PostgreSQL offer instances based on the x86 and ARM compute architectures, allowing you to choose the architecture that best fits your technical needs.

x86: Each vCPU is a hyper-thread on a processor core.
ARM: Each vCPU is a physical processor core, which provides stable performance with dedicated resources. RDS instances that use the ARM architecture offer the same experience as x86-based instances but are more cost-effective, helping you reduce costs and improve efficiency.

The ARM architecture is built on Alibaba Cloud's proprietary Yitian 710 chip and is designed for scenarios such as general computing, cloud-native applications, and Android in Cloud. This architecture offers better cost-effectiveness than the x86 architecture. For more information, see Technical optimizations for ApsaraDB RDS on the YiTian ARM architecture.

Note

The ARM architecture is now part of the YiTian Edition. For more information, see Product types.

The following table compares instances that use the x86 and ARM architectures.

Item	x86	ARM
Database engine	MySQL PostgreSQL SQL Server MariaDB	MySQL PostgreSQL
Major database version	MySQL: 5.5, 5.6, 5.7, 8.0 PostgreSQL: 10, 11, 12, 13, 14, 15 SQL Server: 2008 R2, 2012, 2014, 2016, 2017, 2019 MariaDB: 10.3	MySQL: 8.0 PostgreSQL: 13, 14, 15
Supported features	MySQL feature overview PostgreSQL feature overview SQL Server feature overview MariaDB feature overview	Same features as x86. No adaptation costs. MySQL feature overview PostgreSQL feature overview
Available instance types	Primary instance types for ApsaraDB RDS for MySQL (x86) Primary instance types for ApsaraDB RDS for PostgreSQL (x86) Primary instance types for ApsaraDB RDS for SQL Server Primary instance types for ApsaraDB RDS for MariaDB	Primary instance types for ApsaraDB RDS for MySQL (ARM) Primary instance types for ApsaraDB RDS for PostgreSQL (ARM)
Instance edition	Basic Edition, High-availability Edition, Cluster Edition	High-availability Edition
Available regions	Available in all regions	Currently available for purchase only in the China (Hangzhou), China (Shanghai), China (Beijing), China (Zhangjiakou), China (Shenzhen), and Singapore regions. Note Support for more regions and zones is being gradually rolled out. For the latest information, see the buy page.
Storage type	Enterprise SSDs (ESSDs), high-performance local SSDs, standard SSDs	ESSDs