Dell PowerEdge XE7745 — supported memory

17G 4U GPU server, two AMD EPYC 9005 (Zen 5) CPUs up to 192 cores. 24 DDR5 DIMM slots (12 per CPU, 12 channels per CPU, 1 DIMM per channel). RDIMM only, UDIMMs not supported (technical guide; note the spec sheet contains a typo saying 'unregistered ECC DDR5 DIMMs only' while its own header row says RDIMM). Supported DIMMs all 6400 MT/s rated: 32/64/96/128 GB dual-rank; up to 3 TB total. Speed CPU-dependent: most supported EPYC 9005 SKUs run 6400 MT/s, some (e.g. 9965, 9755) cap at 6000 MT/s. Hosts up to 8x double-wide PCIe Gen5 GPUs (e.g. H200 NVL) or 16x single-wide.

Confirmed = listed in the vendor's memory documentation for this server. Vendor match = the vendor's own part cross-reference matches the module and its speed is validated for the platform; not taken from this server's memory list. Spec match = meets this platform's JEDEC requirements (generation, form factor, validated speed); interchangeability is spec-based, not per-server testing. How we verify →