The document is a technical presentation about the IBM System x3850 X5 server from March 2009. It provides an overview of the flagship 4-socket, 4U rack-optimized server including specifications such as support for 4 Intel Xeon 7500-series CPUs, 64 DDR3 DIMMs, 6 PCIe slots, RAID support, and 2 10Gb Ethernet ports. Details are given about optimal configurations for database and virtualization workloads.