The R5 family, generally available since July 2018, are memory-optimized instances featuring custom Intel Xeon Platinum 8000 series processors, including the 8259CL, with an all-core turbo up to 3.1 GHz. Built on the AWS Nitro System, they are EBS-optimized with no local instance storage and offer up to 25 Gbps of network bandwidth for memory-intensive workloads like high-performance databases.