MSI 4U Single AMD EPYC 9005 4-GPU Server Barebone Liquid Cooled (G4101-03)

The MSI G4101-03 is a 4U single-socket GPU server supporting AMD EPYC 9004/9005 series processors with closed-loop liquid cooling for the CPU, 12 DDR5 DIMM slots (1DPC) supporting RDIMM/RIMM-3DS at up to 6400MT/s. It provides 4 PCIe 5.0 x16 GPU slots plus 2 PCIe 4.0 x16 slots (x8 signal), 12 hot-swap 2.5" U.2 PCIe 4.0 NVMe bays, and ASPEED AST2600 BMC with IPMI, Redfish, and dual BMC flash — with both 80 PLUS Titanium and Platinum PSU options available. First liquid-cooled model in the lineup, and notably listed under Enterprise rather than GPU Servers on MSI's site. Single-socket AMD (not dual), only 12 DIMM slots (vs 24 on other single-socket EPYC enterprise models), and a mix of PCIe 5.0 and 4.0 expansion. NVMe bays are PCIe 4.0. Application positioning is different too — leans into creative/visual workloads (video production, animation, 3D rendering, visualisation) alongside AI training, rather than the cloud/CDN/inference focus of the other models. Dual PSU certification logos suggest multiple PSU options ship with different configs.