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Eight green DDR5 RDIMM modules in a row, gold contacts, black chips, no heat spreaders

NEMIX RAM

NEMIX RAM MR51200-744K8 1TB 8x128GB DDR5 6400 CL52 ECC RDIMM memory upgrade

SKU CH-939X-8MYMF

1 TB kit of eight 128 GB DDR5-6400 CL52 4Rx4 registered ECC RDIMMs at 1.1 V for Supermicro X14SDW-64CM-SP9F

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 1TB 8X128GB

Show 4 more
  • 1TB capacity across eight 128GB modules for maximum server density
  • DDR5 6400 speed with CL52 latency matches controller timing exactly
  • Registered ECC architecture corrects single-bit errors and supports full population
  • 1V operation at 288-pin RDIMM form factor fits Supermicro X14SDW-64CM-SP9F
  • Lifetime replacement warranty with US-based technical support included

Capacity and fit

This 1 TB kit delivers eight 128 GB DDR5 RDIMMs rated at 6400 MT/s with CL52 latency and 1.1 V operation. The 4Rx4 registered ECC modules are built to the exact rank, voltage and timing the Supermicro X14SDW-64CM-SP9F memory controller expects so the full 1 TB is recognised at rated speed.

Headroom and limits

Eight populated slots leave no empty sockets for further expansion on this board. Workloads that exceed 1 TB will require a platform with higher maximum capacity or larger DIMM densities. The registered architecture keeps every slot stable at full population but does not increase the ceiling set by the motherboard.

Thermals and power

Modules run at the standard 1.1 V without heat spreaders relying on server chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller helping maintain signal integrity across all eight slots. Power draw scales with the 1 TB capacity and 6400 MT/s data rate under sustained enterprise workloads.

How it compares

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

Price $34,451.99
Pricier than about 94% of the 21,161 comparable items (median $397.99).
Total capacity 1 TB (8 × 128 GB)
Higher than about 93% of the 20,941 comparable items (median 32 GB).
Price per GB $34.45 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 numberMR51200-744K8
Total capacity1 TB (8 × 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 items1 TB 8 × 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

Will the 6400 MHz DDR5 RDIMMs run at rated speed alongside slower DDR5 modules I already have?

Mixing speeds forces all modules to the slowest installed kit; populate every channel with identical 6400 CL52 4Rx4 RDIMMs for full rated performance.

How can I confirm the 1 TB kit is detected at 6400 MT/s with ECC active after installation?

Check the BIOS memory summary or run dmidecode; it should show 8 × 128 GB DDR5-6400, 4Rx4, Registered, ECC enabled, 1.1 V.

Does the box include only the eight 128 GB RDIMMs or are any tools or cables supplied?

The package contains the eight 288-pin DDR5 RDIMMs only; no installation tools, cables or additional accessories are included.

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