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

NEMIX RAM

NEMIX RAM DDR5 6400 256GB 4x64GB ECC RDIMM CL52 1.1V Supermicro H14SST-GE memory upgrade

SKU CH-6PNK-D0B0A

256 GB DDR5-6400 ECC registered RDIMM kit (4 × 64 GB, CL52, 1.1 V, 2Rx4) validated for the Supermicro H14SST-GE motherboard

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Exact-match 256 GB kit runs at DDR5-6400 CL52 1.1 V for full-rated speed
  • 4 × 64 GB 2Rx4 registered ECC modules fit Supermicro H14SST-GE 288-pin slots
  • Registered buffer offloads controller enabling full-capacity population across all channels
  • ECC corrects single-bit errors on the fly preventing silent data corruption
  • Lifetime replacement warranty with US-based technical support included

Exact-Match 256GB DDR5 Kit

This 256GB kit delivers four 64GB DDR5-6400 registered ECC RDIMMs built to the precise specifications the Supermicro H14SST-GE memory controller expects. The modules operate at 1.1V with CL52 timing and a 2Rx4 rank structure so the board recognises full capacity at rated speed without manual tuning.

Capacity and Headroom

Four slots are fully populated with 64GB each, giving 256GB of registered ECC memory that offloads the controller and corrects single-bit errors in flight. The registered architecture sustains stability across every slot, while the 1.1V DDR5 voltage keeps power draw in line with the platform's design envelope.

Build Integration

The 288-pin RDIMM form factor fits only motherboards wired for registered DDR5; UDIMM or SODIMM boards will not accept these modules. Installation follows the H14SST-GE population rules detailed in the system manual, freeing the remaining expansion space for other server components.

How it compares

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

Price $7,907.99
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 $30.89 per GB
Pricier than about 89% 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 numberMR51200-924K4
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 rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB 4 × 64 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Will the 1.1V CL52 modules run at full speed alongside existing DDR5 RDIMMs in my Supermicro H14SST-GE?

The kit is spec-matched to the H14SST-GE memory controller and population rules so every slot runs fully populated at rated DDR5 6400 speed with ECC and registered buffering active.

How can I verify the 256GB kit is recognised at full capacity and running at 6400 MT/s after installation?

Check POST memory summary or BIOS setup for 256GB total, DDR5 6400, CL52, 1.1V and registered ECC status; run a memory diagnostic to confirm error-free operation.

What comes in the box and do I need any extra parts to install the 4x64GB RDIMM kit?

The package contains the four 64GB 288-pin DDR5 RDIMM modules only; no heat spreaders, cables or tools are included and none are required for standard server DIMM slots.

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