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Four green DDR4 UDIMM sticks, no heat spreaders

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR4 2666MHz CL19 288-Pin UDIMM for Dell Precision 3930 Rack

SKU CH-K5BX-FVH2G

A 128GB kit of four 32GB DDR4 2666MHz CL19 UDIMMs built for Dell Precision 3930 Rack workstations

  • Capacity128GB (4 x 32GB)
  • SpeedDDR4 2666 (PC4 21300)
  • ECCNo
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • 128GB total capacity from four 32GB modules
  • DDR4 2666MHz speed rated at PC4-21300
  • CL19 CAS latency at 1.20V operating voltage
  • 288-pin UDIMM form factor fits Dell Precision 3930 Rack
  • 2Rx8 rank configuration with major OEM chipsets

Dell Precision 3930 Rack memory kit

This 128GB kit contains four 32GB DDR4 2666MHz UDIMMs built for the Dell Precision 3930 Rack workstation. The modules run at 1.20V with CL19 latency and use a 2Rx8 rank structure. They are non-ECC and unbuffered, matching the factory memory specification for this platform.

DDR4 2666MHz UDIMM practical limits

The DDR4 2666 interface caps bandwidth at the PC4-21300 level, so workloads that scale with memory throughput will hit this ceiling. Four populated slots leave no free DIMM sockets for later expansion without removing existing modules. The 2Rx8 organisation is fixed and cannot be changed to a single-rank configuration.

Straightforward slot installation

Installation follows the standard UDIMM procedure: align the 288-pin edge connector with the motherboard slot and press until the retention clips engage. No heat spreader is fitted, so clearance is minimal and cable routing is simple. The usual error is mixing these non-ECC modules with registered or ECC DIMMs, which prevents the system from posting.

Highlights

  • 128GB total capacity from four 32GB modules
  • DDR4 2666MHz speed rated at PC4-21300
  • CL19 CAS latency at 1.20V operating voltage
  • 288-pin UDIMM form factor fits Dell Precision 3930 Rack
  • 2Rx8 rank configuration with major OEM chipsets

Specifications

BrandNEMIX RAM
SeriesDell Server/Workstation Compatible Series Memory
ModelDell DDR4 2666MHZ Non-ECC Unbuffered UDIMM
Part NumberMD21300-328K4
Capacity128GB (4 x 32GB)
SpeedDDR4 2666 (PC4 21300)
ECCNo
Buffered/RegisteredUnbuffered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemDell
CAS LatencyCL19
Heat SpreaderNo
Type288-Pin DDR4 UDIMM
Rank2Rx8
FeaturesDDR4 Non- ECC Unbuffered UDIMM Motherboard Compatible
Package Content128GB (4X32GB) DDR4 2666MHZ PC4-21300 2Rx8 1.2V CL19 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

Should I choose the 128GB kit of four 32GB modules or a different capacity for my Dell Precision 3930 Rack?

This kit provides 128GB total capacity across four 32GB modules, filling four DDR4 slots for the maximum supported density in the Precision 3930 Rack.

What does the 2666MHz speed mean for real-world performance in this workstation?

The DDR4 2666 (PC4-21300) rating sets the maximum data rate the memory controller will run at; in the Precision 3930 Rack it operates at 2666MHz with CL19 latency at 1.2V.

Is this 288-pin UDIMM compatible with the Dell Precision 3930 Rack's memory standard?

Yes, the 288-pin DDR4 UDIMM form factor matches the Precision 3930 Rack's unbuffered non-ECC DDR4 slots, and the 2Rx8 organisation is supported by the platform.

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