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Four green DDR5 RDIMM modules without heat spreaders in a kit

NEMIX RAM

NEMIX RAM DDR5 6400 512GB (4x128GB) CL52 2Rx4 1.1V ECC RDIMM memory upgrade

SKU CH-C8BP-EDCGT

512GB DDR5-6400 ECC RDIMM kit with four 128GB modules at 1.1V CL52 for ASRock Rack GENOA2D16NQM3-2Q

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 512GB 4X128GB

Show 4 more
  • 512 GB total capacity in a 4 × 128 GB kit for high-density server workloads
  • DDR5 6400 speed (PC5-51200) delivers rated throughput for compatible platforms
  • CL52 latency and 1.10 V operation match the memory controller's exact timing requirements
  • Registered ECC 2Rx4 RDIMM architecture enables full-slot population with error correction
  • 288-pin RDIMM form factor verified for ASRock Rack GENOA2D16NQM3-2Q motherboard

Exact-Match 512 GB DDR5 Kit

This NEMIX RAM kit delivers 512 GB as four 128 GB DDR5 RDIMM modules. It is built for servers that require registered ECC memory and is verified for the ASRock Rack GENOA2D16NQM3-2Q motherboard. The modules operate at the standard 1.1 V DDR5 voltage.

Registered 2Rx4 Architecture

The single specification that decides fitment is the 2Rx4 registered ECC layout on a 288-pin DDR5 RDIMM. This rank and buffer configuration matches the memory controller expectations of the target board so the full 512 GB is recognised at the rated DDR5 6400 speed. UDIMM or SODIMM modules will not work in this system.

Sustained Enterprise Stability

Registered buffering offloads the memory controller, allowing all four slots to remain fully populated at the rated CL52 latency without signal degradation. On-die ECC corrects single-bit errors continuously, preventing silent data corruption during extended workloads. The modules run at the standard 1.1 V, maintaining thermal consistency under continuous operation.

How it compares

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

Price $18,548.99
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 $36.23 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 systemsASRock Rack
In the box
Included items512 GB 4 × 128 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

Will the DDR5-6400 speed run at its rated 6400 MT/s once installed in the ASRock Rack GENOA2D16NQM3-2Q?

Yes, the kit is spec-matched to that motherboard so the memory controller will recognise the 2Rx4 rank, 1.1 V voltage and CL52 timing and operate at the full DDR5-6400 data rate.

What does the PC5-51200 designation tell me about the memory interface?

It identifies the DDR5-6400 data rate and the 288-pin RDIMM form factor this board requires, not a UDIMM or SODIMM.

What physical slot and clearance does this 128 GB module need?

Each module is a 288-pin RDIMM with no heat spreader, so it fits standard DDR5 RDIMM slots and leaves maximum clearance for CPU coolers.

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