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Catalog/Micron/DDR5 RDIMM/MTC40F2047S1RC64BB1
Micron · Server memory

MTC40F2047S1RC64BB1

128 GB DDR5-6400 ECC Registered DIMM (RDIMM), dual-rank ×4.

Specs from the moderated catalog How we verify →
Specifications JEDEC / manufacturer data
Memory typeDDR5catalog
Module typeRDIMM · ECC Registered DIMMcatalog
Capacity128 GBcatalog
SpeedDDR5-6400 · PC5-51200catalog
Organization / rank2Rx4catalog
Voltage1.1 VJEDEC standard for DDR5
Form factor288-pin DIMMstandard for DDR5 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.