Rack servers are 1U–4U form-factor compute nodes designed to mount in standard 19-inch equipment racks. This category covers single-socket and dual-socket platforms from major OEMs, ranging from entry-level 1U systems built around Intel Xeon E or AMD EPYC Embedded processors to high-density 2U nodes carrying dual Xeon Scalable or EPYC Genoa/Bergamo CPUs with 24–32 DIMM slots, multiple NVMe bays, and PCIe Gen 5 expansion. GPU-ready configurations supporting 2–8 double-wide accelerators are stocked alongside storage-optimized platforms with 24–60 large-form-factor drive bays.

Key buying considerations include processor generation and TDP, memory capacity and speed (DDR5 vs. DDR4), PCIe slot count and bifurcation support, out-of-band management (iDRAC, iLO, XCC, IPMI 2.0), power redundancy (1+1 or 2+1), and rail-kit compatibility with your existing rack infrastructure. Typical deployments include virtualization hosts, HPC cluster nodes, database servers, AI training and inference workloads, and dense web-tier applications where per-rack compute density and cable management are priorities.