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Twelve green 288-pin DDR5 RDIMM modules in a row, no heat spreaders, gold contacts visible

NEMIX RAM

NEMIX RAM DDR5 6400 CL52 1.5TB 12x128GB ECC Registered RDIMM memory upgrade for ASRock Rack GNRAPD12DNO

SKU CH-92X5-M5CGQ

1.5 TB DDR5-6400 registered ECC kit with twelve 128 GB modules at CL52 and 1.1 V for ASRock Rack GNRAPD12DNO

  • Total capacity1.5 TB (12 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 1.5TB 12X128GB

Show 4 more
  • 5TB capacity with twelve 128GB modules for maximum server density
  • DDR5 6400 speed rated at CL52 latency for responsive data throughput
  • Registered ECC architecture corrects single-bit errors to protect critical workloads
  • 1V operation reduces power draw across fully populated memory channels
  • Exact-fit 288-pin RDIMM kit validated for ASRock Rack GNRAPD12DNO motherboard

Exact-match upgrade for ASRock Rack GNRAPD12DNO

This 1.5 TB kit delivers twelve 128 GB DDR5 RDIMMs tuned to 6400 MT/s at CL52 and 1.10 V. Registered ECC architecture ensures the memory controller recognises every module at full rated speed in the target platform.

Capacity and headroom

Twelve dual-rank 2Rx4 modules populate every slot the board provides, giving 1.5 TB of addressable memory for virtualisation, in-memory databases or large-scale compute. The registered design maintains electrical stability when all slots are filled, while ECC corrects single-bit errors before they affect workloads.

Registered ECC RDIMM form factor

The 288-pin Registered DIMM is the only module type the ASRock Rack GNRAPD12DNO accepts; unbuffered UDIMMs or SODIMMs will not function. Verify the motherboard manual for approved population order and maximum supported capacity per socket before installation.

How it compares

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

Price $49,573.99
Pricier than about 96% of the 21,161 comparable items (median $397.99).
Total capacity 1.5 TB (12 × 128 GB)
Higher than about 97% of the 20,941 comparable items (median 32 GB).
Price per GB $33.05 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 numberMR51200-724K12
Total capacity1.5 TB (12 × 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 items1.5 TB 12 × 128 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Will the 12 modules run at 6400MHz CL52 alongside any existing DDR5 RDIMMs I keep in the ASRock Rack GNRAPD12DNO?

Mixing kits is not recommended; the board will downclock all DIMMs to the slowest common speed and loosest timing, so full 6400MHz CL52 operation is only guaranteed when the 12-module kit populates the slots by itself.

How can I verify the 1.5TB kit is recognised at 6400MHz with ECC active after installation?

Enter the BIOS or UEFI and confirm the memory frequency reads 6400MT/s, total capacity shows 1.5TB, and ECC status is reported as enabled or active.

Does the package include only the twelve 128GB RDIMMs, or are any cables, brackets or licences supplied?

The box contains the twelve 288-pin DDR5 6400MHz CL52 1.1V ECC Registered RDIMMs and nothing else; no cables, brackets or software licences are included.

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