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Two green DDR5 RDIMM sticks, no heat spreaders, 288 pins each

NEMIX RAM

NEMIX RAM DDR5 6400 CL52 128GB (2x64GB) ECC Registered RDIMM 2Rx4 1.1V ASRock Rack GNR2D16-2T memory upgrade

SKU CH-W4QQ-WJYZ7

128GB DDR5-6400 ECC Registered RDIMM kit (2×64GB, CL52, 1.1V, 2Rx4) validated for the ASRock Rack GNR2D16-2T motherboard

  • Capacity128GB (2 x 64GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 6400 (PC5 51200)
  • CAS LatencyCL52
  • Voltage1.10V
  • ECCYes

Size 128GB 2X64GB

Show 4 more configurations
  • Exact-match 128 GB DDR5-6400 kit runs at rated speed
  • Registered 2Rx4 ECC RDIMM offloads controller for full-population stability
  • ECC corrects single-bit errors preventing silent data corruption
  • Verified fit for ASRock Rack GNR2D16-2T motherboard memory rules
  • Lifetime replacement warranty with US-based technical support

Exact-match server upgrade

This NEMIX RAM kit delivers 128GB of DDR5 memory in a two-module configuration built for the ASRock Rack GNR2D16-2T motherboard. Each 64GB module is a 288-pin registered DIMM with ECC and a 2Rx4 organisation. The kit operates at 6400 MT/s with CL52 latency at 1.1V, matching the board's qualified specifications exactly.

Sustained-load stability

Registered architecture buffers the address and command signals so the memory controller remains stable when all slots are populated at full capacity. ECC detects and corrects single-bit errors in real time, preventing silent data corruption during long-running workloads. The 1.1V operating voltage keeps power draw consistent under continuous server duty cycles.

When the jump is worth it

This kit replaces smaller-capacity or slower DDR5 RDIMMs when the platform requires the full 128GB at 6400 MT/s with registered ECC. It is not for systems that accept only unbuffered UDIMMs, SODIMM form factors, or lower-density modules. Builders needing a different capacity, rank structure, or voltage should verify the motherboard's qualified-vendor list before purchasing.

Highlights

  • Exact-match 128 GB DDR5-6400 kit runs at rated speed
  • Registered 2Rx4 ECC RDIMM offloads controller for full-population stability
  • ECC corrects single-bit errors preventing silent data corruption
  • Verified fit for ASRock Rack GNR2D16-2T motherboard memory rules
  • Lifetime replacement warranty with US-based technical support

Specifications

BrandNEMIX RAM
SeriesNEMIX RAM Original Series Server Memory
ModelDDR5 ECC RDIMM Registered Server Memory
Part NumberMR51200-924K2
Capacity128GB (2 x 64GB)
Type288-Pin DDR5 RDIMM
SpeedDDR5 6400 (PC5 51200)
CAS LatencyCL52
Voltage1.10V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
ChipsetMajor OEM Samsung, Micron, Hynix
Heat SpreaderNo
Compatible SystemASRock Rack
FeaturesDDR5 ECC RDIMM Motherboard Compatible
Package Content128GB 2X64GB DDR5 6400MHz PC5-51200 2Rx4 1.1V 288-PIN ECC RDIMM KIT

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Questions about this item

How much power does each 64 GB DDR5 6400 RDIMM draw at the rated 1.1 V?

Each module operates at 1.10 V; total kit capacity is 128 GB across two 64 GB RDIMMs, so power scales with the number of populated slots.

What motherboard and memory slots are required to install this 288-pin DDR5 RDIMM kit?

The kit is verified for the ASRock Rack GNR2D16-2T motherboard and requires DDR5 RDIMM slots; it will not fit UDIMM or SODIMM sockets.

Will the registered ECC design let me fill every DDR5 slot on the ASRock Rack board without downclocking?

Yes, the 2Rx4 registered architecture offloads the memory controller so all slots can run at the rated 6400 MT/s with ECC active.

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