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Two green DDR4 UDIMM sticks, no heat spreaders

NEMIX RAM

NEMIX RAM MD21300-618K2 32GB DDR4 2666 CL19 memory upgrade

SKU CH-ZFGB-KEZZX

32 GB dual-channel DDR4 kit at 2666 MHz CL19 for Dell Precision 3930 Rack Workstation

  • Capacity32GB (2 x 16GB)
  • SpeedDDR4 2666 (PC4 21300)
  • ECCNo
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • 32 GB kit (2 × 16 GB) doubles desktop capacity
  • DDR4 2666 MHz PC4-21300 speed matches Dell Precision 3930 Rack spec
  • CL19 CAS latency at 1.2 V for stable operation
  • 288-pin UDIMM 1Rx8 non-ECC unbuffered design fits standard desktop slots
  • Major OEM Samsung, Micron or Hynix chips stress-tested for reliability

Dell Precision 3930 Rack Workstation Compatible

This 32GB kit contains two 16GB DDR4 2666 UDIMM modules built for the Dell Precision 3930 Rack Workstation. It targets IT professionals and power users who need to expand system memory for virtualisation, content creation or heavy multitasking. The unbuffered non-ECC design matches the workstation's standard memory architecture.

Check Your Current Configuration

Before ordering, verify that your Precision 3930 Rack Workstation has two free 288-pin DIMM slots and that the motherboard firmware supports DDR4 2666 at 1.2V. Confirm the existing modules are also non-ECC unbuffered UDIMMs running at CL19 so the new pair will operate in dual-channel mode without timing mismatches.

Kit Contents and Testing Impact

The package delivers a matched pair of 1Rx8 modules stress-tested under load for stability. No heat spreaders are included, so airflow inside the rack chassis must be adequate for bare PCBs. The lifetime replacement warranty covers the modules themselves, while the pre-validated compatibility removes the guesswork from the upgrade process.

Highlights

  • 32 GB kit (2 × 16 GB) doubles desktop capacity
  • DDR4 2666 MHz PC4-21300 speed matches Dell Precision 3930 Rack spec
  • CL19 CAS latency at 1.2 V for stable operation
  • 288-pin UDIMM 1Rx8 non-ECC unbuffered design fits standard desktop slots
  • Major OEM Samsung, Micron or Hynix chips stress-tested for reliability

Specifications

BrandNEMIX RAM
SeriesDell Server/Workstation Compatible Series Memory
ModelDell DDR4 2666MHZ Non-ECC Unbuffered UDIMM
Part NumberMD21300-618K2
Capacity32GB (2 x 16GB)
SpeedDDR4 2666 (PC4 21300)
ECCNo
Buffered/RegisteredUnbuffered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemDell
CAS LatencyCL19
Heat SpreaderNo
Type288-Pin DDR4 UDIMM
Rank1Rx8
FeaturesDDR4 Non- ECC Unbuffered UDIMM Motherboard Compatible
Package Content32GB (2X16GB) DDR4 2666MHZ PC4-21300 1Rx8 1.2V CL19 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

Does the MD21300-618K2 kit include both 16GB modules or must I buy a second stick separately?

The kit ships as a matched pair of two 16GB UDIMMs, giving 32GB total; no additional modules are required.

Should I choose this CL19 2666MHz kit or a faster CL18 alternative for my Precision 3930 Rack?

The Precision 3930 Rack is validated for DDR4 2666 CL19 1.20V 1Rx8 UDIMMs; a faster CL18 module would run at the same 2666MHz speed.

Will the advertised PC4-21300 bandwidth actually appear in Windows Task Manager after installation?

Task Manager reports the JEDEC data rate of 2666MT/s; the PC4-21300 figure is the theoretical peak transfer rate calculated from that speed.

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