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Green circuit board with black memory chips, no heat spreader, gold edge connectors, single 288-pin DDR5 RDIMM module

NEMIX RAM

NEMIX RAM 128GB DDR5 5600 CL46 4Rx4 ECC RDIMM Lenovo ThinkSystem 4X77A88054 memory upgrade

SKU CH-K6VY-YV2RC

Adds 128GB of DDR5 5600 ECC registered memory with CL46 latency and 1.1V operation for compatible Lenovo ThinkSystem servers

  • Total capacity128 GB
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB capacity expands server memory headroom
  • DDR5 5600 speed delivers high bandwidth for demanding workloads
  • ECC registered design protects data integrity in mission-critical systems
  • 1 V operation reduces power draw per module
  • Validated for Lenovo ThinkSystem 4X77A88054 compatibility

128GB DDR5 5600 ECC RDIMM

This 128GB registered DIMM delivers DDR5 5600 speed with CL46 latency and on-die ECC for data integrity. It targets administrators upgrading Lenovo ThinkSystem servers that require 4Rx4 registered memory at 1.1V.

DDR5 5600 registered limits

The module runs at the JEDEC-standard 5600 MT/s with a fixed CL46 timing and 1.1V operation. Registered buffering adds one cycle of address-command delay, and the 4Rx4 organisation increases electrical load on the memory controller compared to dual-rank alternatives.

Upgrade from lower-capacity DDR5 RDIMMs

Replacing smaller DDR5 RDIMMs with this 128GB stick multiplies capacity per slot, useful when all DIMM sockets are populated. The jump is worth it when workloads exceed the current memory ceiling and the platform supports 4Rx4 registered modules at 5600 MT/s.

How it compares

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

Price $3,883.99
Pricier than about 76% 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 $30.34 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 lineLenovo Server/Workstation Compatible Series Memory
Model nameLenovo DDR5 5600 MHz ECC RDIMM Registered Server Memory
Part numberMR44800-744K1
Total capacity128 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 rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo
In the box
Included items128 GB (1 × 128 GB) DDR5 5600 MHz PC5-44800 4Rx4 1.1 V CL46 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Should I pick the 128 GB module or a smaller capacity for my ThinkSystem 4X77A88054?

This listing supplies a single 128 GB DDR5 5600 RDIMM; choose it when your server needs the maximum registered ECC capacity per slot.

What does the 5600 MT/s rating deliver once the module is installed?

The module runs at DDR5 5600 (PC5-44800) with CL46 latency, providing the rated throughput for Intel-based ThinkSystem servers that support this speed.

How does the 288-pin DDR5 RDIMM interface affect compatibility?

The 288-pin registered DIMM fits DDR5 RDIMM slots in compatible Lenovo ThinkSystem platforms and is electrically keyed for DDR5 only.

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