We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Sixteen green DDR5 RDIMM modules without heat spreaders in a kit box

NEMIX RAM

NEMIX RAM DDR5 6400 256GB 16x16GB ECC Registered RDIMM Supermicro H14DSG-O-CPU memory upgrade

SKU CH-ZTXT-SYJW6

256 GB kit of 16 registered ECC DDR5 RDIMMs at 6400 MT/s, CL52, 1.1 V, validated for the Supermicro H14DSG-O-CPU motherboard

  • Capacity256GB (16 x 16GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 6400 (PC5 51200)
  • CAS LatencyCL52
  • Voltage1.10V
  • ECCYes
  • 256 GB capacity across 16 modules for dense server workloads
  • DDR5-6400 speed with CL52 latency for rated performance
  • Registered ECC design corrects single-bit errors on the fly
  • 1 V operation at 1Rx8 rank for full-slot stability
  • Verified fit for Supermicro H14DSG-O-CPU 288-pin RDIMM slots

Exact-match DDR5-6400 RDIMM kit for Supermicro

This 256GB kit contains sixteen 16GB DDR5-6400 (PC5-51200) registered ECC RDIMMs. Each module runs at 1.1V with CL52 latency and 1Rx8 organisation. The 288-pin RDIMM form factor matches the motherboard's memory-controller requirements for full-capacity recognition at rated speed.

Suited for servers needing maximum registered ECC

Ideal for administrators populating every slot on a Supermicro H14DSG-O-CPU board with validated registered ECC memory. Not suitable for systems that require unbuffered UDIMMs, SODIMMs, non-ECC modules, or a different DDR generation. Buyers needing lower capacities or alternative speeds should verify their platform's qualified-vendor list first.

Sixteen ranks deliver 256GB at DDR5-6400

The 1Rx8 registered design lets the memory controller drive all sixteen slots at the full 6400MT/s data rate with ECC protection. Headroom exists for heavily threaded workloads and large in-memory datasets. Capacity runs out when the application footprint exceeds 256GB or the platform's maximum supported memory per socket is lower than the installed total.

Highlights

  • 256 GB capacity across 16 modules for dense server workloads
  • DDR5-6400 speed with CL52 latency for rated performance
  • Registered ECC design corrects single-bit errors on the fly
  • 1 V operation at 1Rx8 rank for full-slot stability
  • Verified fit for Supermicro H14DSG-O-CPU 288-pin RDIMM slots

Specifications

BrandNEMIX RAM
SeriesNEMIX RAM Original Series Server Memory
ModelDDR5 ECC RDIMM Registered Server Memory
Part NumberMR51200-618K16
Capacity256GB (16 x 16GB)
Type288-Pin DDR5 RDIMM
SpeedDDR5 6400 (PC5 51200)
CAS LatencyCL52
Voltage1.10V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx8
ChipsetMajor OEM Samsung, Micron, Hynix
Heat SpreaderNo
Compatible SystemSupermicro
FeaturesDDR5 ECC RDIMM Motherboard Compatible
Package Content256GB 16X16GB DDR5 6400MHz PC5-51200 1Rx8 1.1V 288-PIN ECC RDIMM KIT

Questions about this item

What motherboard must I have for this 256GB DDR5-6400 ECC RDIMM kit to be recognised at full capacity?

The kit is verified for the Supermicro H14DSG-O-CPU motherboard; its memory controller expects 1Rx8 registered ECC modules at 1.1V with CL52 timing, and the board’s 288-pin RDIMM slots match the kit exactly.

Can I mix these 1.1V CL52 registered ECC RDIMMs with slower DDR5 modules already installed in the same H14DSG-O-CPU system?

The board will down-clock all populated slots to the slowest common speed and loosest timing, so every module must be rated for DDR5-6400 CL52 at 1.1V to keep the kit running at its rated 6400 MT/s.

After installation, how can I confirm the full 256GB kit is running at DDR5-6400 with ECC active?

Check the BIOS memory information screen or run a tool such as dmidecode; it should report 256GB total, 16 modules, speed 6400 MT/s, type DDR5, ECC enabled, and registered (buffered) operation.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.