The R5d memory-optimized instance family was generally available on July 25, 2018, featuring Intel Xeon Platinum 8000 series processors, such as the 8259CL, with a sustained all-core turbo frequency of up to 3.1 GHz. Built on the AWS Nitro System, R5d instances include high-speed local NVMe SSD instance storage, offering up to 3.6 TB for I/O intensive workloads. They provide up to 25 Gbps of network bandwidth, making them suitable for high-performance databases and in-memory analytics.