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Four green DDR5 RDIMM modules with black chips, no heat spreaders, 288-pin gold contacts

NEMIX RAM

NEMIX RAM DDR5 512GB 4x128GB 6400MHz CL52 1.1V ECC RDIMM Supermicro H13SSW

SKU CH-4C15-BG9RJ

A 512 GB DDR5 ECC registered DIMM kit of four 128 GB modules running at 6400 MHz CL52 and 1.1 V, validated for the Supermicro H13SSW motherboard

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 512 GB total capacity from four 128 GB modules for maximum server memory density
  • DDR5 6400 speed with CL52 latency at 1.10 V for efficient high-throughput operation
  • Registered ECC RDIMM design with 2Rx4 organisation corrects single-bit errors and offloads the memory controller
  • 288-pin DDR5 form factor built to Supermicro H13SSW population rules for guaranteed fitment
  • Lifetime replacement warranty with US-based technical support for long-term deployment confidence

Purpose-built server memory kit

This NEMIX RAM kit delivers 512 GB of DDR5 ECC registered memory in four 128 GB modules. It is built for administrators who need the exact rank, voltage and timing the Supermicro H13SSW memory controller expects so the system recognises full capacity at rated speed. The 2Rx4 registered design offloads the controller, allowing every slot to run fully populated while on-die ECC corrects single-bit errors before they reach production workloads.

Upgrade path and fitment

The kit replaces lower-capacity or slower DDR5 RDIMMs when your workload demands maximum registered memory per channel at 6400 MT/s. The jump is worth it when the board’s population rules call for 2Rx4 modules at 1.1 V and you need the full 512 GB configuration without mixing ranks or voltages. Verify the motherboard manual for approved DIMM population order and supported capacities before purchase.

DDR5 registered DIMM limits

DDR5 RDIMMs at 6400 MT/s with CL52 latency and 1.1 V operation are bound by the memory controller’s maximum supported frequency and rank-per-channel limits. Registered buffering reduces electrical load but does not override the board’s native population rules or maximum density per slot. The 288-pin form factor fits only DDR5 RDIMM slots; it will not work in UDIMM or SODIMM sockets.

How it compares

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

Price $16,745.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $32.71 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 numberMR51200-724K4
Total capacity512 GB (4 × 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 items512 GB 4 × 128 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Does the 288-pin RDIMM form factor match the Supermicro H13SSW motherboard slots?

Yes, the kit uses 288-pin DDR5 RDIMMs, which is the exact form factor required by the Supermicro H13SSW motherboard.

What is the correct population order when installing all four 128GB modules?

Install the four 2Rx4 modules following the DIMM population sequence shown in the Supermicro H13SSW manual to ensure the memory controller recognizes the full 512GB capacity at DDR5-6400.

Will the registered ECC design reduce the need for future module replacement?

The registered architecture offloads the memory controller and on-die ECC corrects single-bit errors, helping maintain stability across all four slots and extending usable service life.

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