Amazon RDS for PostgreSQL Now Supports T3 Instance Types
You can now launch T3 instance types when using Amazon RDS for PostgreSQL. Amazon T3 instances are the next generation burstable general-purpose instance type that provide a baseline level of CPU performance with the ability to burst CPU usage at any time for as long as required. T3 instances offer a balance of compute, memory, and network resources and are ideal for database workloads with moderate CPU usage that experience temporary spikes in use.
T3 instances accumulate CPU credits when a workload is operating below baseline threshold. Each earned CPU credit provides the T3 instance the opportunity to burst with the performance of a full CPU core for one minute when needed. Amazon RDS T3 instances are configured for Unlimited mode, which means they can burst beyond the baseline over a 24-hour window for an additional charge.
Amazon RDS database instances running PostgreSQL versions 9.6.9 (and higher) and 10.4 (and higher) are supported with T3 instance types. You can easily scale up to these new instance classes by modifying your existing DB instance in the AWS RDS Management Console.
Please refer to the Amazon RDS User Guide for more details and refer to Amazon RDS Pricing for pricing details and regional availability.