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Two green DDR4 LRDIMM sticks, 128GB kit, 288-pin, no heat spreader

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR4 2666 ECC LRDIMM CL19 memory upgrade

SKU CH-91MV-HH979

128 GB DDR4-2666 ECC LRDIMM kit, 2 × 64 GB CL19 at 1.2 V, validated for ASRock Rack EPYC boards

  • Capacity128GB (2 x 64GB)
  • SpeedDDR4 2666 (PC4 21300)
  • ECCYes
  • Buffered/RegisteredLoad Reduced
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V

Capacity 128GB 2X64GB

  • 128 GB kit with two 64 GB modules for high-capacity server workloads
  • DDR4 2666 speed rated at PC4-21300 for enterprise throughput
  • ECC LRDIMM load-reduced design improves signal integrity on dense memory channels
  • CL19 latency at 1.20 V balances responsiveness with power efficiency
  • Validated for ASRock Rack ROMED8-2T EPYC motherboards to ensure compatibility

128GB DDR4 2666 ECC LRDIMM Kit

This 128GB kit contains two 64GB DDR4 2666 LRDIMM modules built for server workloads. It targets administrators upgrading an ASRock Rack ROMED8-2T motherboard running AMD EPYC processors. The load-reduced design helps maintain signal integrity when populating multiple DIMM slots on supported platforms.

Load-Reduced DDR4 2666 Interface

The modules run at DDR4 2666 (PC4-21300) with a CAS latency of 19 at 1.2V. Load-reduced buffering reduces electrical load on the memory controller, allowing higher total capacity per channel than standard registered DIMMs. ECC protection corrects single-bit errors to preserve data integrity in mission-critical environments.

Verify Motherboard And Slot Compatibility

Confirm the target system uses 288-pin DDR4 LRDIMM slots and supports 4Rx4 modules at this density. Check the ASRock Rack ROMED8-2T qualified vendor list for the exact part number ML21300-944K2. Ensure the BIOS revision supports 64GB LRDIMM population across the required channels.

Highlights

  • 128 GB kit with two 64 GB modules for high-capacity server workloads
  • DDR4 2666 speed rated at PC4-21300 for enterprise throughput
  • ECC LRDIMM load-reduced design improves signal integrity on dense memory channels
  • CL19 latency at 1.20 V balances responsiveness with power efficiency
  • Validated for ASRock Rack ROMED8-2T EPYC motherboards to ensure compatibility

Specifications

BrandNEMIX RAM
SeriesASRock Server Motherboard Compatible Series Memory
ModelASRock DDR4 2666MHZ ECC LRDIMM Load Reduced Server Memory
Part NumberML21300-944K2
Capacity128GB (2 x 64GB)
SpeedDDR4 2666 (PC4 21300)
ECCYes
Buffered/RegisteredLoad Reduced
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemASRock
CAS LatencyCL19
Heat SpreaderNo
Type288-Pin DDR4 LRDIMM
Rank4Rx4
FeaturesDDR4 ECC LRDIMM Load Reduced Server Motherboard Compatible
Package Content128GB (2X64GB) DDR4 2666MHZ PC4-21300 4Rx4 1.2V CL19 288-PIN ECC LRDIMM Load Reduced Server Memory KIT

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Questions about this item

Should I pick the 2x64GB kit or a single 128GB module?

The kit ships as two matched 64GB LRDIMMs, giving 128GB total in a dual-channel layout; a single 128GB module is not offered for this part.

What does the 2666MHz speed mean once installed in my ASRock Rack ROMED8-2T?

The modules run at DDR4 2666 (PC4-21300) with CL19 latency at 1.20V, delivering the rated throughput on EPYC platforms that support this speed.

Does the 288-pin LRDIMM interface limit capacity or rank configuration?

The 288-pin DDR4 LRDIMM form factor carries 4Rx4 organisation, allowing the 64GB density per module while reducing electrical load on the server memory bus.

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