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Sixteen green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 256GB (16x16GB) DDR5 4800 CL40 ECC RDIMM SuperMicro Kit

SKU CH-YFZT-V6N10

256 GB kit of sixteen 16 GB DDR5 4800 CL40 ECC registered DIMMs validated for Supermicro SuperServer systems

  • Total capacity256 GB (16 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256GB total capacity from sixteen 16GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered RDIMM design protects data integrity
  • CL40 CAS latency at 1.10V operating voltage
  • Validated for SuperMicro SuperServer SSG-521E-E1CR24H and SSG-521E-E1CR24L

SuperMicro DDR5 4800 ECC RDIMM kit

This 256GB kit contains sixteen 16GB DDR5 4800 registered DIMMs built for SuperMicro Storage SuperServer models SSG-521E-E1CR24H, SSG-521E-E1CR24L and X13SEDW. ECC and registered signalling protect data integrity in enterprise workloads. Modules run at 1.1V with CL40 latency and a 1Rx8 organisation. IT teams upgrading these specific platforms gain a validated, high-density memory solution.

Thermals, noise and power

Each module operates at the standard DDR5 1.10V without a heat spreader, relying on server chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller, helping keep system power draw predictable. Passive components produce no audible noise. The 4800 MT/s speed at CL40 delivers rated bandwidth while staying within JEDEC baseline voltage.

Build quality and connectors

Major OEM Samsung, Micron or Hynix DRAM chips are assembled on 288-pin RDIMM PCBs and stress tested under load before shipping. The registered design and ECC function require motherboard support for registered DIMMs and error correction. Populating all sixteen slots achieves the full 256GB capacity; partial fills are possible but reduce total memory. No heat spreaders mean clearance is minimal for tight DIMM spacing.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $7,191.99
Pricier than about 83% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (16 × 16 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $28.09 per GB
Pricier than about 79% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineSuperMicro Server/Workstation Compatible Series Memory
Model nameSuperMicro DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-618K16
Total capacity256 GB (16 × 16 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB (16 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How do I install these 288-pin DDR5 RDIMMs in my Supermicro SSG-521E-E1CR24H, and what step do people skip?

Power down, unplug, open the chassis, align each module's notch with the slot key, press firmly until both latches click, then verify all 16 modules show in BIOS. The step often missed is seating every module fully so both latches engage.

What maintenance or replacement will this 256GB kit need later?

No routine maintenance is required. ECC corrects single-bit errors on the fly. Replace a module only if the system logs uncorrectable errors or a DIMM fails POST. Keep firmware current for best compatibility.

What limit appears first under sustained load with these CL40 1.1V modules?

The memory controller's thermal and power envelope is reached before the DRAM's rated speed. Expect throttling or reduced bandwidth once the CPU's memory subsystem hits its sustained power limit.

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