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

NEMIX RAM

NEMIX RAM 256GB (4×64GB) DDR5 6400MHz CL52 2Rx4 1.1V ECC RDIMM Supermicro AS-8126GS-NB3RT

SKU CH-D5TX-TRTN5

A 256 GB DDR5 registered ECC kit of four 64 GB modules running at 6400 MHz CL52 2Rx4 1.1 V for the Supermicro AS-8126GS-NB3RT server

  • Total capacity256 GB (4 × 64 GB)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank2Rx4
  • 256 GB total capacity across four 64 GB modules
  • DDR5 6400 MHz speed for high-throughput server workloads
  • ECC registered design detects and corrects single-bit errors
  • 1 V operating voltage reduces power draw per module
  • Validated for Supermicro AS-8126GS-NB3RT GPU A+ Server

Capacity and configuration

This 256 GB kit contains four 64 GB DDR5 registered DIMMs built for the Supermicro GPU A+ Server AS-8126GS-NB3RT. Each module is a 2Rx4 ECC RDIMM operating at 1.1 V with a CAS latency of 52. The 288-pin form factor matches the server’s memory slots exactly.

ECC and registration

Error-correcting code and registered buffering protect data integrity and reduce electrical load on the memory controller. These features are mandatory for the target platform and cannot be replaced by standard unbuffered modules. The kit arrives as a matched set of four to maintain channel balance.

Speed and voltage

The modules run at 6400 MHz (PC5-51200) at the specified 1.1 V. This combination of frequency, latency and voltage is the single specification that determines compatibility with the qualified server; any deviation will prevent the system from posting.

How it compares

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

Price $8,679.99
Pricier than about 85% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $33.91 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 numberMR51200-924K4
Total capacity256 GB (4 × 64 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 items256 GB (4 × 64 GB) DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Will the registered ECC RDIMMs or their heat-spreader-less design need replacement after long server deployments?

The modules carry a lifetime replacement warranty from the manufacturer, and with no heat spreader fitted they rely on chassis airflow rather than a component that can degrade.

What limits sustained throughput first — the CL52 latency or the 6400 MHz data rate?

The rated 6400 MT/s transfer speed sets the bandwidth ceiling; CAS latency 52 determines access delay but does not cap peak throughput.

How much power and heat do the four 1.1 V DDR5 RDIMMs add when the Supermicro AS-8126GS-NB3RT runs continuously?

Each 64 GB DIMM operates at 1.1 V, so total memory voltage remains 1.1 V across the kit; actual wattage depends on workload and server fan curves.

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