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Green DDR5 RDIMM circuit board with black chips and gold edge connectors

NEMIX RAM

NEMIX RAM 128GB DDR5 6400MHz CL52 1.1V 2Rx4 ECC RDIMM memory upgrade for Supermicro SYS-242B-NR

SKU CH-75E3-C0DXN

128GB DDR5 6400MHz ECC registered DIMM with CL52 latency and 1.1V operation for Supermicro SYS-242B-NR servers

  • Total capacity128 GB
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank2Rx4
  • 128 GB DDR5 6400 MHz CL52 registered ECC RDIMM for Supermicro SYS-242B-NR
  • 2Rx4 organisation and 1.1 V operation keep power draw low in dense servers
  • Single 128 GB module simplifies capacity scaling without mixing ranks
  • Major OEM Samsung Micron Hynix chips provide enterprise-grade reliability
  • 288-pin DDR5 RDIMM form factor fits the SuperServer MP memory slots exactly

Compatible Supermicro Server Memory

This NEMIX RAM module provides 128GB of DDR5 ECC RDIMM memory built for the Supermicro SYS-242B-NR. It runs at 6400MHz with CL52 latency at 1.1V using a 2Rx4 registered design. The 288-pin form factor fits the server's memory slots directly.

Ideal for Single-Module Capacity Upgrade

Suits administrators expanding a compatible Supermicro server with one high-density stick. Not for systems that require unbuffered UDIMM modules, lower-voltage 1.05V operation, or speeds other than 6400MHz. Buyers needing multiple matched modules or non-ECC memory should look elsewhere.

128GB 2Rx4 Registered ECC Specification

The 2Rx4 registered ECC organisation with CL52 timing at 6400MHz determines whether this module matches the platform's qualified-vendor list. Verify the server's memory population rules before ordering.

How it compares

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

Price $4,148.99
Pricier than about 77% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $32.41 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR51200-724K1
Total capacity128 GB
Product type288-Pin DDR5 RDIMM
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB (1 × 128 GB) DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM

Questions about this item

Does the package contain only the 128GB DDR5 6400MHz CL52 1.1V 2Rx4 ECC RDIMM module or are extra parts included?

The box holds one 128GB DDR5 6400MHz CL52 1.1V 288-pin ECC RDIMM module; no cables, brackets or additional components are supplied.

Should I choose the single 128GB stick or combine multiple sticks for the Supermicro SYS-242B-NR?

This listing provides one 128GB 2Rx4 registered DIMM; add identical modules to fill the remaining slots your motherboard supports.

What does the 6400MHz rating mean once the module is installed in the Supermicro SYS-242B-NR?

The module runs at DDR5-6400 with CL52 latency at 1.1V, delivering the rated speed when the platform enables the corresponding memory profile.

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