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Green circuit board with black memory chips and gold edge connectors

NEMIX RAM

NEMIX RAM 8GB DDR4 2666 ECC UDIMM 1Rx8 CL19 1.2V 288-Pin Lenovo 4ZC7A08696

SKU CH-KHJW-VS78N

ECC UDIMM adds 8 GB of DDR4 2666 memory with CL19 timing for compatible Lenovo systems

  • Total capacity8 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • ECC protection safeguards data integrity in critical workloads
  • DDR4 2666 speed delivers responsive performance for servers
  • 2 V operation reduces power draw and heat
  • 1Rx8 single-rank design supports broad platform compatibility
  • 288-pin UDIMM form factor fits Lenovo ThinkSystem slots

Lenovo ThinkSystem compatible ECC UDIMM

This 8 GB DDR4 2666 module is built for Lenovo ThinkSystem servers and workstations that require ECC unbuffered memory. It fits 288-pin DDR4 slots and operates at 1.2 V with CL19 latency. The single-rank 1Rx8 organisation suits platforms qualified for the 4ZC7A08696 part number.

Single module ready for installation

The package contains one 8 GB stick with no heat spreader, keeping the profile low for dense server chassis. No extra cables, brackets or software are included because the module installs directly into a standard UDIMM socket. The bare PCB design is typical for OEM-qualified server memory.

ECC unbuffered with 1Rx8 rank

Error-correcting code protects data integrity in mission-critical workloads while the unbuffered design keeps latency low for compatible ThinkSystem platforms. The 1Rx8 rank configuration must match the system's qualified memory list; boards that require registered or dual-rank modules will not accept this part.

How it compares

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

Price $50.99
Cheaper than about 77% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $6.37 per GB
Cheaper than about 62% 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 DDR4 2666 MHz ECC Unbuffered UDIMM
Part numberME21300-818K1
Total capacity8 GB
Product type288-Pin DDR4 ECC UDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL19
ECC supportYes
Buffer typeUnbuffered
Heat spreaderNo
Memory rank1Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsLenovo
In the box
Included items8 GB (1 × 8 GB) DDR4 2666 MHz PC4-21300 1Rx8 1.2 V CL19 288-PIN ECC Unbuffered UDIMM

Questions about this item

Will the single-rank 1Rx8 ECC modules need any firmware updates or scheduled replacement after installation?

No firmware updates or scheduled replacements are required; the ECC UDIMM runs at 1.20 V with CL19 timing and is validated for continuous server workloads.

What thermal limit appears first when the memory runs at 2666 MT/s under sustained load?

The module has no heat spreader, so the DRAM junction temperature reaches its rated maximum before any other component becomes a bottleneck.

How much power does the 8 GB stick draw and how loud is it during all-day operation?

At 1.2 V the stick consumes only a few watts, produces no audible noise, and stays within standard DDR4 thermal limits without active cooling.

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