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Four green DDR5 RDIMM modules without heat spreaders in a 256GB kit

NEMIX RAM

NEMIX RAM 256GB 4x64GB DDR5 6400 PC5-51200 CL52 4Rx4 1.1V ECC RDIMM Supermicro X14DBG-LC+ memory upgrade

SKU CH-8QD5-DRXHE

256 GB DDR5 6400 registered ECC RDIMM kit, four 64 GB modules at CL52 1.1 V, validated for Supermicro X14DBG-LC+ servers

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 4X64GB

Show 3 more
  • 256 GB total capacity from four 64 GB modules
  • DDR5 6400 speed with CL52 latency at 1.1 V
  • Registered ECC RDIMM architecture for full-slot stability
  • 4Rx4 rank organisation matches controller expectations
  • 288-pin form factor built for Supermicro X14DBG-LC+

Exact-match DDR5 upgrade

This 256GB kit (four 64GB modules) is built for the Supermicro X14DBG-LC+ motherboard. DDR5-6400 (PC5-51200) Registered ECC RDIMMs with 4Rx4 organisation and CL52 timing match the board's memory controller expectations precisely. The modules operate at 1.1V and use the 288-pin RDIMM form factor required by this platform.

Thermals noise power

Registered architecture buffers address and command signals, reducing electrical load on the memory controller when all slots are populated. ECC corrects single-bit errors on the fly, preventing silent data corruption and unplanned reboots. The 1.1V operating voltage aligns with the DDR5 standard for server memory. No heat spreaders are fitted on these modules.

Build integration

The kit provides four RDIMMs that must be installed following the motherboard's population rules for full-capacity operation. Consult the system manual for supported capacities and approved DIMM order before installation. This memory is not compatible with boards requiring UDIMM or SODIMM form factors, nor with platforms that do not support Registered ECC DDR5.

How it compares

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

Price $7,629.99
Pricier than about 84% 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 $29.80 per GB
Pricier than about 85% 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 numberMR51200-944K4
Total capacity256 GB (4 × 64 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 items256 GB 4 × 64 GB DDR5 6400 MHz PC5-51200 4Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

How do I install the 4Rx4 DDR5 6400 RDIMMs in my Supermicro X14DBG-LC+ and which step is often missed?

Power down, open the chassis, and insert each 288-pin module into the slots specified by the board manual; the step most people skip is verifying the exact population order for 4Rx4 DIMMs so the memory controller recognises the full 256 GB at 6400 MT/s.

What maintenance or replacement will this 256 GB DDR5 ECC RDIMM kit need later?

No routine maintenance is required; the modules run at 1.1 V without heat spreaders, so keep airflow clean, and replace a stick only if ECC logs report uncorrectable errors or the system fails to post.

What limit appears first when the 4Rx4 DDR5 6400 kit runs sustained workloads on the X14DBG-LC+?

The memory controller's maximum supported rank-per-channel limit is reached before thermal throttling, so fully populating all slots with 4Rx4 modules caps total capacity at 256 GB and prevents adding more DIMMs.

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