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Two green DDR5 RDIMM modules with black chips and gold contacts

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 5600 ECC RDIMM 2Rx4 CL46 1.1V SR655 V3 memory upgrade

SKU CH-E7P6-T0D43

128 GB DDR5 registered ECC kit with two 64 GB modules at 5600 MT/s and CL46 latency

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB capacity with two 64 GB modules for high-density server workloads
  • DDR5 5600 speed rated at PC5-44800 for fast data throughput
  • ECC registered design with CL46 latency protects data integrity in critical applications
  • Low 1.10 V operating voltage reduces power draw in dense configurations
  • Validated for Lenovo ThinkSystem SR655 V3 AI server compatibility

System-specific DDR5 server kit

This 128GB kit contains two 64GB DDR5 5600 registered ECC RDIMMs built for the Lenovo ThinkSystem SR655 V3. Each module runs at 1.1V with CL46 latency and a 2Rx4 organisation, delivering 128GB of validated capacity in a 288-pin form factor.

Suited for SR655 V3 expansion

Administrators scaling memory in the named Lenovo platform can install this matched pair directly. Sites that require unbuffered UDIMMs, non-ECC modules, lower densities or a different DDR generation will not be able to use these registered RDIMMs.

Registered ECC with 2Rx4 layout

The registered buffer and on-die ECC protect data integrity in multi-socket workloads, while the 2Rx4 rank structure determines how the memory controller addresses each 64GB module. Verify that the SR655 V3 memory configuration rules allow this rank count per channel before purchase.

How it compares

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

Price $3,908.99
Pricier than about 76% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $30.54 per GB
Pricier than about 87% 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 numberMR44800-924K2
Total capacity128 GB (2 × 64 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL46
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo
In the box
Included items128 GB (2 × 64 GB) DDR5 5600 MHz PC5-44800 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Should I pick the 128 GB kit or look for a different capacity for the SR655 V3?

The kit supplies 128 GB as two 64 GB modules, matching the part number MR44800-924K2 built for the ThinkSystem SR655 V3.

What does the 5600 MT/s rating deliver once the modules are installed in the server?

At DDR5 5600 the memory runs at PC5-44800 bandwidth with CL46 latency and 1.1 V, providing registered ECC throughput tuned for the SR655 V3 platform.

How does the 288-pin RDIMM interface limit speed or capacity in this server?

The 288-pin DDR5 RDIMM form factor with 2Rx4 organisation is the native socket for the SR655 V3, so the kit operates at the rated 5600 MT/s without down-clocking.

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