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Eight green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM MR51200-618K8 128GB 8x16GB DDR5 6400 CL52 1.1V ECC RDIMM Supermicro H13DSG-OM memory upgrade

SKU CH-AF5J-98JZY

128 GB eight-module DDR5 kit with ECC and registered buffering for Supermicro H13DSG-OM servers

  • Total capacity128 GB (8 × 16 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 128 GB total capacity from eight 16 GB modules
  • DDR5 6400 speed with CL52 latency for rated performance
  • Registered ECC design corrects single-bit errors automatically
  • 1 V operation matches the server memory controller spec
  • 288-pin RDIMM form factor fits Supermicro H13DSG-OM motherboard

Exact-fit DDR5-6400 RDIMM kit

This 128 GB kit contains eight 16 GB DDR5 6400 registered ECC modules built to the Supermicro H13DSG-OM motherboard's specifications. Each stick runs at 1.1 V with CL52 latency and a 1Rx8 organisation. The registered design lets the memory controller drive every slot at full population without signal degradation.

Keyed 288-pin installation

Modules slot into the board's 288-pin DDR5 RDIMM sockets in the order the manual prescribes; the key notch prevents backward insertion. Because the kit matches the required rank, voltage and timing, the firmware detects the full 128 GB at rated speed without manual tuning. Skipping the documented population sequence is the most common reason a server fails to POST.

Pre-order checklist

Confirm the H13DSG-OM manual's maximum capacity per channel and the approved DIMM sequence for eight modules. Verify the BIOS revision listed for DDR5-6400 RDIMM support and plan the installation steps the vendor documents. This kit is not suited for systems that accept only unbuffered UDIMMs or that limit registered memory to lower speeds.

How it compares

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

Price $4,125.99
Pricier than about 77% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (8 × 16 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $32.23 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 numberMR51200-618K8
Total capacity128 GB (8 × 16 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 rank1Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB 8 × 16 GB DDR5 6400 MHz PC5-51200 1Rx8 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

How can I confirm the kit is running at DDR5 6400 with CL52 after installing it in my Supermicro H13DSG-OM?

Enter the BIOS or use a tool like dmidecode to verify each 16 GB module reports 6400 MT/s, 1.10 V and CL52 timings; the registered ECC design ensures the memory controller recognises the full 128 GB at rated speed.

What comes in the box and is anything else required to use the MR51200-618K8 kit?

The package contains eight 16 GB DDR5 288-pin RDIMMs for a total of 128 GB; no heat spreaders or extra cables are included, and the motherboard’s DIMM slots provide all necessary power and signalling.

Why choose the 128 GB 8×16 GB CL52 version instead of a different capacity or latency?

This exact-match kit delivers the 1Rx8 registered ECC layout, 1.1 V voltage and CL52 timing the H13DSG-OM memory controller expects, allowing full 128 GB population at DDR5 6400 without down-clocking.

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