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Four green DDR4 UDIMM modules in a clear plastic tray

NEMIX RAM

NEMIX RAM 64GB (4x16GB) DDR4 2666MHz PC4-21300 CL19 1Rx8 1.2V 288-Pin UDIMM for Dell Precision 3930 Rack

SKU CH-YJ7N-W5A2G

A 64 GB DDR4-2666 non-ECC UDIMM kit of four 16 GB modules at CL19 and 1.2 V, validated for the Dell Precision 3930 Rack workstation

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 64 GB kit expands workstation capacity with four 16 GB modules
  • DDR4 2666 MHz speed matches Dell Precision 3930 Rack specifications
  • CL19 latency and 1.2 V voltage optimise power efficiency
  • 288-pin UDIMM form factor ensures direct motherboard compatibility
  • Major OEM chips from Samsung, Micron or Hynix deliver validated reliability

System-specific memory kit for Dell Precision 3930

This 64 GB kit contains four 16 GB DDR4 2666 MT/s UDIMMs built for the Dell Precision 3930 Rack workstation. It targets IT professionals and system integrators who need a validated, single-part-number upgrade for that exact platform.

Non-ECC unbuffered DDR4 2666 with CL19 timing

The modules run at 1.2 V, use a 1Rx8 organisation and carry no ECC or registered buffers. That combination matches the Precision 3930 Rack memory controller requirements; systems requiring ECC or registered DIMMs cannot use this kit.

Four matched modules ship as a single kit

The package delivers all four 288-pin UDIMMs together, so the workstation can be populated to 64 GB in one step without sourcing individual sticks. No heat spreaders, software utilities or additional accessories are included.

How it compares

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

Price $384.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $6.02 per GB
Cheaper than about 65% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineDell Server/Workstation Compatible Series Memory
Model nameDell DDR4 2666 MHz Non-ECC Unbuffered UDIMM
Part numberMD21300-618K4
Total capacity64 GB (4 × 16 GB)
Product type288-Pin DDR4 UDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL19
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Memory rank1Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsDell
In the box
Included items64 GB (4 × 16 GB) DDR4 2666 MHz PC4-21300 1Rx8 1.2 V CL19 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

What does the 2666MHz speed mean for my Dell Precision 3930 Rack?

The kit runs at DDR4 2666 (PC4-21300) so the memory controller will operate at that data rate; the workstation will use the full 2666MHz if the CPU and BIOS support it.

How does the 288-pin UDIMM interface limit what I can install?

These are 288-pin DDR4 UDIMM modules, so they only fit DDR4 UDIMM slots and cannot be used in DDR5, RDIMM or SO-DIMM sockets.

Will the four 16GB sticks fit the Precision 3930 Rack chassis?

The kit contains four standard-height 288-pin UDIMMs with no heat spreader, matching the Dell Precision 3930 Rack's four DIMM slots.

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