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

NEMIX RAM

NEMIX RAM 32GB DDR4 2666 CL19 2Rx4 ECC RDIMM 78P4198 memory upgrade

SKU CH-G7WH-721CB

32 GB DDR4 2666 ECC registered RDIMM, CL19 2Rx4, 1.2 V, 288-pin for Lenovo servers

  • Total capacity32 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • 32 GB capacity expands server memory headroom for demanding workloads
  • DDR4 2666 speed delivers PC4-21300 bandwidth for data-intensive applications
  • ECC registered design detects and corrects single-bit errors to protect data integrity
  • 2 V operation reduces power draw in dense Lenovo server deployments
  • 288-pin RDIMM form factor with 2Rx4 organisation ensures drop-in compatibility with 78P4198 systems

32 GB DDR4 2666 ECC RDIMM for Lenovo servers

This 32 GB registered DDR4 module runs at 2666 MHz with CL19 latency and 1.2 V operation. It uses a 2Rx4 organisation and carries ECC for data integrity in server workloads. The 288-pin RDIMM form factor targets Lenovo systems referencing part number 78P4198.

Verify registered ECC support and slot availability

Confirm the motherboard accepts registered ECC RDIMMs rather than unbuffered or non-ECC memory. Check that a free 288-pin DDR4 slot exists and that the platform qualifies 2666 MHz modules at 1.2 V. Consult the system manual for maximum capacity per slot and population rules.

Replaces lower-capacity or non-ECC DDR4 RDIMMs

Upgrading from smaller registered modules adds capacity for virtualisation and database tasks while retaining ECC protection. The jump is worthwhile when the platform supports 2666 MHz registered memory and the workload benefits from 32 GB per slot. Systems limited to unbuffered memory cannot use this module.

How it compares

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

Price $197.99
Cheaper than about 59% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $6.19 per GB
Cheaper than about 63% 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 numberMR21300-324K1
Total capacity32 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 rank2Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsLenovo
In the box
Included items32 GB (1 × 32 GB) DDR4 2666 MHz PC4-21300 2Rx4 1.2 V CL19 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Does the box contain anything besides the single 32 GB DDR4 2666 CL19 2Rx4 ECC RDIMM?

The package includes only the 32 GB (1×32 GB) DDR4 2666 MHz PC4-21300 2Rx4 1.2 V CL19 288-pin ECC RDIMM; no cables, brackets or extra modules are supplied.

How do I decide between this 32 GB module and a smaller capacity for my Lenovo server?

Choose this 32 GB stick when the motherboard supports 2Rx4 registered DIMMs and you need maximum capacity per slot; smaller modules use fewer ranks and may be required if the board limits total rank count.

What does the 2666 MHz rating mean once the DIMM is installed in a compatible Lenovo system?

The module will run at 2666 MT/s with CL19 latency at 1.2 V, delivering PC4-21300 bandwidth while the registered buffer and ECC maintain data integrity under server workloads.

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