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Two green DDR5 RDIMM sticks without heat spreaders

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 6400MHz PC5-51200 4Rx4 1.1V 288-PIN ECC RDIMM Registered Server Memory Kit

SKU CH-YM7T-AA7E5

256 GB kit of two 128 GB DDR5 6400 MHz ECC registered DIMMs validated for Supermicro X14SBI-TF servers

  • Total capacity256 GB (2 × 128 GB)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank4Rx4
  • 256GB total capacity supports large datasets with two 128GB modules
  • DDR5 6400MHz speed delivers high bandwidth for demanding workloads
  • ECC registered design protects data integrity in mission-critical systems
  • 1V operation reduces power draw per module
  • Validated for Supermicro X14SBI-TF compatibility ensures reliable integration

Capacity and platform fit

This 256GB kit delivers two 128GB DDR5 RDIMM modules built for Supermicro X14SBI-TF systems. Registered ECC operation and 4Rx4 organisation suit multi-socket servers and memory-intensive workloads that require error correction and high density per slot.

Speed ceiling and voltage headroom

Rated at 6400MHz PC5-51200 with CL52 latency, the modules run at 1.10V standard DDR5 voltage. The registered buffer adds one cycle of command latency, so peak bandwidth is reached on sustained server loads rather than bursty desktop patterns.

Upgrade path and limits

The kit replaces lower-capacity RDIMM sets or fills empty slots on X14SBI-TF boards that support 128GB per DIMM. It will not work in unbuffered UDIMM slots, non-ECC consumer platforms, or systems limited to 64GB modules.

How it compares

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

Price $8,746.99
Pricier than about 85% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $34.17 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 lineSupermicro Compatible Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server RAM
Part numberMR51200-744K2
Total capacity256 GB (2 × 128 GB)
Product type288-PIN DDR5 RDIMM
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB (2 × 128 GB) DDR5 6400 MHz PC5-51200 4Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Can these DDR5 6400MHz RDIMMs run with slower DDR5 modules already in my Supermicro X14SBI-TF?

Mixing speeds forces all modules to the slowest installed kit; the 6400MHz rating will drop to match the lower frequency.

How can I confirm the 256GB kit is running at 6400MHz with ECC active after installation?

Check BIOS or UEFI memory info for 6400MHz speed, CL52 latency, 1.10V voltage and ECC enabled status.

What exactly ships in the box and do I need extra cooling or cables?

The box contains two 128GB DDR5 RDIMMs; no heat spreaders, cables or additional parts are included.

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