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Sixteen green DDR5 ECC RDIMM sticks in a row

NEMIX RAM

NEMIX RAM 256GB (16 x 16GB) DDR5 6400MHz ECC RDIMM Server RAM

SKU CH-C5X9-C8D7W

A 256GB DDR5 6400MHz registered ECC server memory kit with sixteen 16GB modules at CL52 and 1.1V

  • Total capacity256 GB (16 × 16 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latency52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 256GB total capacity from 16 modules of 16GB each
  • DDR5 6400MHz speed rated at PC5-51200 for high throughput
  • ECC registered design detects and corrects memory errors
  • 1Rx8 single-rank organisation with 1.1V low-voltage operation
  • Built with major OEM Samsung Micron Hynix chips

High-Capacity DDR5 Server Kit

This 256GB kit contains sixteen 16GB DDR5 6400MHz registered DIMMs with ECC. It is built for enterprise servers and workstations that require registered memory and error correction. The modules are not compatible with standard desktop or laptop platforms that use unbuffered memory.

Thermals and Power Efficiency

Each module operates at 1.1V with a CAS latency of 52. The low voltage helps reduce power draw across all sixteen slots in dense server configurations. Registered buffering adds stability for sustained workloads without increasing thermal output.

Build Integration Requirements

The 288-pin RDIMM form factor requires a motherboard with DDR5 RDIMM slots and a chipset that supports registered ECC memory. Populating sixteen slots frees the installer from mixing capacities but demands a platform qualified for full-slot population at 6400MHz.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $7,432.99
Pricier than about 91% of the 6,523 comparable items (median $188.99).
Total capacity 256 GB (16 × 16 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
CAS latency 52
Higher than about 90% of the 439 comparable items (median 40).
Price per GB $29.04 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Model namePart#: MR51200-618K16-SM-SYS-112C-TN
Part numberPart#: MR51200-618K16-SM-SYS-112C-TN
Total capacity256 GB (16 × 16 GB)
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latency52
ECC supportYes
Buffer typeRegistered
Memory rank1Rx8
Power
Rated voltage1.1 V

Questions about this item

How do I install the 288-PIN DDR5 ECC RDIMM modules in a server and what step is often missed?

Align each module's notch with the slot key, press firmly until the retention clips click, then verify in BIOS that all 16 modules are detected at 6400MHz with ECC active; the step often missed is confirming the registered buffer initialises correctly on every channel.

What maintenance or replacement will the 1Rx8 Samsung Micron Hynix chips need over their service life?

The modules have no moving parts and require no scheduled maintenance; replacement is only needed if a module fails memtest or the server reports corrected ECC errors exceeding the platform threshold.

What limit appears first when the 256GB kit runs sustained workloads at 6400MHz?

The CAS latency of 52 cycles at 1.1V sets the timing floor; under continuous load the memory controller's thermal throttling or power budget typically caps sustained throughput before the DRAM itself reaches its electrical limits.

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