The Ranks Per DIMM/Data Width are 2Rx8 and
2Rx4, the capacity up to 32Gb and 64GB under 1DPC.
If Ranks Per DIMM and Data Width is 2Rx8, the MRDIMM Capacity up to 32GB
If Ranks Per DIMM and Data Width is 2Rx4, the MRDIMM Capacity up to 64GB.
Please refer to the Intel Snapshot below.