MSI 4U Single AMD EPYC 9005 4-GPU Server Barebone Air Cooled (G4101-05)

The MSI G4101-05 is a 4U single-socket GPU server supporting AMD EPYC 9004/9005 series processors with air cooling, 12 DDR5 DIMM slots (1DPC) supporting RDIMM/RIMM-3DS at up to 6400MT/s. It provides 4 PCIe 5.0 x16 FHFL triple-wide 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. The air-cooled sibling of the G4101-03. Near-identical specs — same socket, same 12 DIMM slots, same 4x PCIe 5.0 x16 + 2x PCIe 4.0 x16 (x8), same 12x U.2 NVMe bays, same dual PSU options. Two differences: air cooling instead of closed-loop liquid cooling, and the PCIe 5.0 slots are explicitly called out as FHFL triple-wide (accommodating larger GPUs). Application positioning also shifts from creative/visual workloads to cloud/CDN/AI inference — suggesting the liquid-cooled -03 targets workstation-like use while the air-cooled -05 is positioned as a more conventional data centre GPU server.