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Catalog/Samsung/DDR4 RDIMM/M393AAG40M3B-CYFC0
Samsung · Server memory

M393AAG40M3B-CYFC0

128 GB DDR4-2933 ECC Registered DIMM (RDIMM), dual-rank ×4.

Specs from the moderated catalog How we verify →
Specifications JEDEC / manufacturer data
Memory typeDDR4catalog
Module typeRDIMM · ECC Registered DIMMcatalog
Capacity128 GBcatalog
SpeedDDR4-2933 · PC4-23464catalog
Organization / rank2Rx4catalog
Voltage1.2 VJEDEC standard for DDR4
Form factor288-pin DIMMstandard for DDR4 RDIMM
Frequently asked
What does 2Rx4 mean?
Two ranks of DRAM chips, each 4 bits wide ("×4"). Rank organization affects how many modules a memory controller can drive at full speed, so it's listed as a key spec.