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Green rectangular DDR5 memory module with gold edge connector and black chips, no heat spreader

NEMIX RAM

NEMIX RAM 128GB DDR5 6400MHz PC5-51200 2Rx4 1.1V CL52 288-PIN ECC Registered RDIMM memory upgrade

SKU CH-JVSG-VG4FA

128GB DDR5 6400MHz ECC Registered RDIMM with CL52 latency and 1.1V operation, verified for Supermicro H13DSG-OM motherboard compatibility

  • Total capacity128 GB
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 128 GB capacity supports large workloads
  • DDR5 6400 speed delivers rated throughput
  • CL52 latency matches controller timing
  • Registered ECC corrects single-bit errors
  • 288-pin RDIMM fits Supermicro H13DSG-OM

System-specific DDR5 ECC RDIMM

This NEMIX RAM module delivers 128GB of DDR5 memory at 6400MHz PC5-51200 with CL52 latency and 1.1V operation. It is built as a 2Rx4 Registered ECC RDIMM for the Supermicro H13DSG-OM motherboard, using major OEM chips from Samsung, Micron or Hynix.

Thermals noise and power draw

The 1.1V operating voltage keeps power draw low for a high-capacity server DIMM. No heat spreader is fitted, so airflow across the 288-pin module relies on chassis cooling. Registered buffering reduces electrical load on the memory controller during sustained workloads.

Build fit and constraints

This kit requires a motherboard that accepts 288-pin DDR5 RDIMMs and supports the exact rank, voltage and timing profile. It will not work in UDIMM or SODIMM slots, nor in systems limited to lower capacities or different DDR generations. Verify the Supermicro manual for approved population order before installing.

How it compares

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

Price $4,051.99
Pricier than about 77% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $31.66 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR51200-724K1
Total capacity128 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

How do I install this 288-pin RDIMM in my Supermicro H13DSG-OM and which slot order should I follow?

Power down the server, open the chassis, and insert the module into the DDR5 slot specified by the motherboard manual for the first DIMM population; the keyed 288-pin edge connector only seats one way.

Will the ECC and registered buffer on this 128GB module need any firmware updates or component swaps over time?

No, the on-die ECC and registered architecture operate without firmware patches or user-replaceable parts for the life of the module.

At what point does the CL52 latency at 6400 MT/s become the bottleneck during sustained all-core workloads?

The fixed CAS latency of 52 cycles at the rated 6400 MT/s transfer rate is the first timing limit reached when the memory controller runs continuous read/write streams.

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