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Four green DDR5 RDIMM modules with gold contacts and black chips

NEMIX RAM

NEMIX RAM 512GB (4x128GB) DDR5 6400 CL52 ECC RDIMM Supermicro AS-8126GS-NB3RT

SKU CH-571R-TFDW2

512 GB DDR5 ECC registered server kit with four 128 GB modules at 6400 MT/s CL52 for the Supermicro AS-8126GS-NB3RT

  • Total capacity512 GB (4 × 128 GB)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank2Rx4
  • 512GB total capacity from four 128GB modules for heavy server workloads
  • DDR5 6400 speed with CL52 latency for responsive data handling
  • ECC registered design detects and corrects errors to protect critical data
  • 10V operation reduces power draw in dense configurations
  • Validated for Supermicro AS-8126GS-NB3RT GPU A+ Server compatibility

512GB DDR5 ECC RDIMM kit for Supermicro

This 512GB kit contains four 128GB DDR5 6400MHz registered ECC modules built for the Supermicro GPU A+ Server AS-8126GS-NB3RT. It targets administrators who need maximum registered memory capacity in that specific platform.

Installation and common issues

Modules are 288-pin DDR5 RDIMMs that seat in the server's standard DIMM slots; the kit ships as a matched set so population order follows the motherboard manual. The most frequent issue is mixing these registered sticks with unbuffered memory or populating slots in the wrong sequence, which prevents the system from posting.

Deciding specification: 1.1V CL52 2Rx4 registered

The combination of 1.1V operation, CL52 latency, dual-rank 2Rx4 organisation and registered ECC function determines whether the memory is electrically and logically compatible with the AS-8126GS-NB3RT memory controller.

How it compares

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

Price $18,013.99
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 $35.18 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
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx4
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

How do I verify the kit is running at 6400 MT/s with CL52 after installation?

Enter the system BIOS or use a tool such as CPU-Z to confirm the memory operates at 6400 MT/s with timings of 52-52-52 at 1.10 V.

What is included in the package and is anything else required?

The box contains four 128 GB DDR5 288-pin ECC RDIMM modules for a total of 512 GB; no extra parts are needed for installation.

Which capacity configuration should I choose for the Supermicro AS-8126GS-NB3RT?

This kit provides the full 512 GB (4 × 128 GB) supported by the server; select it when you need the maximum registered ECC capacity.

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