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Eight green 288-pin DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM MR51200-724K8 1TB 8x128GB DDR5 6400 CL52 RDIMM Supermicro H13SSL-NT

SKU CH-21JW-M99HZ

Eight-module kit provides 1 TB of DDR5 ECC registered memory at 6400 MT/s for the Supermicro H13SSL-NT motherboard

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 1TB capacity with eight 128GB modules for maximum server density
  • DDR5 6400 speed rated at PC5-51200 bandwidth
  • Registered ECC design corrects single-bit errors automatically
  • 1V operation at CL52 latency matches motherboard specs
  • Verified compatible with Supermicro H13SSL-NT motherboard

Exact DDR5-6400 RDIMM kit for Supermicro H13SSL-NT

This 1 TB kit contains eight 128 GB DDR5 registered DIMMs running at 6400 MT/s with CL52 latency and 1.10 V operation. Each module is a 288-pin RDIMM with 2Rx4 organisation and on-die ECC, built from major OEM Samsung, Micron or Hynix components. It is designed for servers that require registered memory and will not work in platforms that accept only unbuffered UDIMMs or SODIMMs.

Sustained-load behaviour

The registered buffer reduces electrical load on the memory controller, allowing all eight slots to remain fully populated at the rated 6400 MT/s without down-clocking. ECC detects and corrects single-bit errors in real time, preventing silent data corruption during long-running compute or database workloads. Operation at 1.10 V keeps power draw predictable under continuous utilisation.

Replaces partial or slower memory configurations

This kit replaces any smaller-capacity or lower-speed DDR5 RDIMM set that leaves DIMM slots empty or forces the controller to run below 6400 MT/s. The jump is worth it when the workload demands the full 1 TB at native speed with registered ECC stability. It is not for systems that require UDIMMs, SODIMMs, or non-ECC memory.

How it compares

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

Price $32,972.99
Pricier than about 93% of the 21,161 comparable items (median $397.99).
Total capacity 1 TB (8 × 128 GB)
Higher than about 93% of the 20,941 comparable items (median 32 GB).
Price per GB $32.97 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 numberMR51200-724K8
Total capacity1 TB (8 × 128 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 items1 TB 8 × 128 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

How much power does the 1.10V DDR5 6400 kit draw when the server runs all day?

Each module operates at 1.10 volts, the standard DDR5 voltage, so total power scales with the eight 128 GB sticks installed; the registered design also reduces electrical load on the memory controller during sustained workloads.

What motherboard slot and population rules must my Supermicro H13SSL-NT already have to accept this 8×128 GB kit?

The board needs eight free 288-pin RDIMM slots and must support 2Rx4 registered ECC DIMMs at DDR5 6400; consult the manual for the exact population order required for a full 1 TB configuration.

Will these CL52 registered ECC modules work alongside any older DDR5 DIMMs I might still have?

Mixing is not recommended; the kit is validated as a matched 8×128 GB set at CL52 1.10 V, and adding different ranks, speeds or latencies can prevent the server from training at the rated 6400 MT/s.

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