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Green rectangular circuit board with gold edge connectors and black memory chips, no heat spreader

NEMIX RAM

NEMIX RAM 16GB DDR4 2666 ECC RDIMM CL19 1.2V 288-Pin Lenovo 78P4197 memory upgrade

SKU CH-1FDC-G7HM2

16 GB DDR4 2666 ECC RDIMM CL19 1.2 V 288-pin module for Lenovo 78P4197 servers

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • ECC protection guards data integrity in server workloads
  • Registered design stabilises signal for multi-module configurations
  • 2 V operation reduces power draw and heat
  • 2666 MT/s DDR4 speed matches Lenovo 78P4197 spec
  • 16 GB single module simplifies capacity upgrades

Lenovo 78P4197 compatible DDR4 RDIMM

This 16 GB DDR4 2666 registered ECC module is built for Lenovo servers and workstations that require the 78P4197 part number. It suits administrators who need single-slot capacity increases without mixing ranks.

16 GB at CL19 2666 MHz with 1.20 V

The 1Rx4 organisation delivers 16 GB per DIMM, so a single module fills one slot and leaves remaining channels open for further expansion. Registered buffering and ECC protect data integrity under sustained multi-threaded workloads, while the 1.20 V operating voltage matches platform specifications. Headroom ends when the memory controller reaches its maximum supported DIMM count or total capacity per channel.

Replaces lower-capacity or non-ECC DDR4 RDIMMs

The jump is worthwhile when a system runs registered DDR4 at 2666 MHz and needs ECC protection or higher single-module density than 8 GB sticks provide. It is not for platforms that require unbuffered UDIMMs, load-reduced LRDIMMs, or speeds beyond 2666 MHz.

How it compares

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

Price $101.99
Cheaper than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% 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 RDIMM Registered Server Memory
Part numberMR21300-614K1
Total capacity16 GB
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank1Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsLenovo
In the box
Included items16 GB (1 × 16 GB) DDR4 2666 MHz PC4-21300 1Rx4 1.2 V CL19 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Will the 1Rx4 registered DIMM work with my existing Lenovo DDR4 2666 ECC RDIMMs?

Yes — the module matches DDR4 2666 PC4-21300, 1.2 V, CL19, 288-pin ECC registered spec, so it will run alongside identical Lenovo DIMMs when populated per the server's memory-configuration rules.

How do I confirm the stick is running at 2666 MT/s with ECC active after install?

Check the BIOS memory-info screen or run dmidecode / lshw on Linux; both will show 2666 MT/s, 1Rx4 organisation, registered ECC and 1.2 V operation.

Does the box contain only the 16 GB RDIMM or are any cables or brackets included?

The package contains the single 16 GB DDR4 2666 ECC RDIMM only; no cables, brackets or additional hardware are supplied.

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