Meet the family of AWS EC2 instance types

With the lowest cost per GiB of RAM out of all EC2 instance types, the R3 instance is best suited for memory intensive applications. Featuring high-frequency Intel Xeon (Ivy Bridge) processors and the ability to withstand a memory bandwidth of 63,000 MB per second, the R3 instance type tops its predecessors -- M2 and CR1 instances. Improvements to memory bandwidth, I/O performance, memory per instance and price point per GiB of RAM enable the R3 instance to offer higher performance.

The R3 instance works well for a high-performance cloud-based database, distributed memory cache or a larger SAP deployment.