Dell PowerEdge XE9680 — supported memory

32 DDR5 DIMM slots (16 per CPU, 8 channels per CPU at 2 DPC). Supports registered ECC DDR5 RDIMMs only. Speeds CPU-dependent: up to 5600 MT/s (1DPC) with 5th Gen Xeon Scalable, up to 4800 MT/s (1DPC) with 4th Gen; 2DPC runs at up to 4400 MT/s. Supported RDIMM capacities 32/64/96 GB dual-rank and 128 GB quad-rank; up to 4 TB total. Minimum populated config is GPU-dependent (e.g. MI300X configs require 2 TB or more). Two 4th/5th Gen Intel Xeon Scalable CPUs; 6U host for 8-way GPU boards (HGX H100/H200/H20, MI300X, Gaudi 3). Liquid-cooled sibling XE9680L is documented separately by Dell (own spec sheet + technical guide) and is listed as its own row.

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 →