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Four green DDR5 RDIMM modules, bare black chips, gold contacts, no heat spreaders

NEMIX RAM

NEMIX RAM 512GB (4×128GB) DDR5 6400 CL52 1.1V 4Rx4 ECC RDIMM memory upgrade

SKU CH-0N5Q-WJBCR

A 512 GB DDR5-6400 ECC RDIMM kit with four 128 GB modules at CL52 and 1.1 V, validated for Supermicro X14SDW-64CM-SP9F motherboards

  • 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 from four 128 GB modules
  • DDR5 6400 speed with CL52 latency at 1.1 V
  • Registered ECC RDIMM prevents data corruption under load
  • 4Rx4 quad-rank design maximises density per slot
  • Verified compatible with Supermicro X14SDW-64CM-SP9F motherboard

Server-Specific DDR5 Kit

This 512GB kit contains four 128GB DDR5-6400 RDIMMs built for the Supermicro X14SDW-64CM-SP9F motherboard. It targets administrators who need the exact rank, voltage and timing the board's memory controller expects for full-capacity operation.

DDR5 RDIMM Population Limits

The 288-pin Registered ECC modules use a 4Rx4 organisation that lets the memory controller drive every slot at the rated 6400 MT/s speed. Population rules and maximum supported capacity are defined by the motherboard manual, not by the modules themselves.

512GB Registered ECC Headroom

Four ranks per DIMM and on-die ECC protect large working sets from single-bit errors while the registered buffer keeps signal integrity at full load. Workloads that exceed the board's approved DIMM-per-channel limit or total capacity ceiling will require a different platform.

How it compares

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

Price $18,738.99
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 $36.60 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 numberMR51200-744K4
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 rank4Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items512 GB 4 × 128 GB DDR5 6400 MHz PC5-51200 4Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Should I buy this 512 GB kit or look for smaller capacities?

This kit provides exactly 512 GB (4 × 128 GB) of DDR5-6400 ECC RDIMM memory. Choose it when your Supermicro X14SDW-64CM-SP9F motherboard requires the full 4Rx4 registered population at 1.1 V to reach maximum supported capacity.

What does the 6400 MT/s rating mean once the modules are installed?

The DDR5-6400 (PC5-51200) modules run at 6400 MT/s with CL52 latency at 1.1 V, delivering the peak bandwidth the X14SDW-64CM-SP9F memory controller expects when all four slots are populated with 4Rx4 registered DIMMs.

How does the 288-pin RDIMM interface limit what I can do with this kit?

The 288-pin registered ECC RDIMM form factor fits only DDR5 RDIMM slots that support 4Rx4 modules; it cannot be used in UDIMM, SODIMM or non-ECC slots, and the motherboard must approve this rank and voltage combination in its qualified vendor list.

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