Amazon RDS for MySQL and MariaDB Now Support R5 Instance Types
You can now launch R5 instance types when using Amazon Relational Database Service (RDS) for MySQL and Amazon RDS for MariaDB. Amazon EC2 R5 instances are the next generation of Amazon EC2 memory optimized instances. R5 instances are based on the Amazon EC2 Nitro System, a combination of dedicated hardware and lightweight hypervisor which delivers practically all of the compute and memory resources of the host hardware to your database instance.
With a 1:8 vCPU to memory ratio, R5 instances are well suited for running memory intensive database workloads including transaction processing, data warehousing, and analytics. R5 instances introduce a new larger instance size, r5.24xlarge, which provides 96 vCPUs and 768GiB of memory per instance. Depending on your workload, you may be able to achieve up to a 39% performance boost with R5 instances compared to R4 instances.
You can scale up to the new instance types by modifying your existing DB instance in the AWS RDS Management Console. Refer to the Amazon RDS User Guide for more details.
Review the Amazon RDS pricing page for pricing and regional availability.