AWS Graviton2-based database instances for Amazon Relational Database Service (RDS) for PostgreSQL are now supported in: US West (N. California), Canada (Central), South America (São Paulo), and Europe (London). Graviton2 instances provide up to 35% performance improvement and up to 52% price/performance improvement over comparable current generation x86-based instances for RDS open source databases depending on database engine, version, and workload. You can launch these database instances when using Amazon RDS for PostgreSQL.