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Two green DDR4 UDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 64GB (2x32GB) DDR4 2666 CL19 1.2V 2Rx8 UDIMM memory upgrade for Supermicro MBD-C9Z390CG-IW

SKU CH-MRPQ-Y0CHA

A 64 GB DDR4 2666 kit of two 32 GB UDIMMs built for the Supermicro MBD-C9Z390CG-IW

  • Capacity64GB (2 x 32GB)
  • SpeedDDR4 2666 (PC4 21300)
  • ECCNo
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • 64 GB total capacity with two 32 GB modules
  • DDR4 2666 MT/s speed rated at PC4-21300
  • Low 1.2 V operating voltage for efficient power use
  • CL19 CAS latency and 2Rx8 dual-rank organisation
  • Validated compatibility with Supermicro MBD-C9Z390CG-IW workstation board

Compatible DDR4 upgrade for Supermicro

This 64 GB kit supplies two 32 GB UDIMM modules validated for the Supermicro MBD-C9Z390CG-IW motherboard. It runs at DDR4 2666 with CL19 timings and 1.20 V, using 2Rx8 non-ECC unbuffered chips from major OEM suppliers.

288-pin UDIMM form factor and matched pair

The modules use the standard 288-pin DDR4 UDIMM layout and ship as a tested pair, so they install directly into the board's memory slots without extra cables, brackets or software. The matched configuration enables dual-channel operation for the platform.

Verify two free slots and DDR4 2666 support

Confirm the motherboard has two available DDR4 UDIMM slots and that the BIOS accepts 32 GB non-ECC unbuffered modules at 2666 MT/s. Systems limited to lower densities, registered memory only, or a different memory generation cannot use this kit.

Highlights

  • 64 GB total capacity with two 32 GB modules
  • DDR4 2666 MT/s speed rated at PC4-21300
  • Low 1.2 V operating voltage for efficient power use
  • CL19 CAS latency and 2Rx8 dual-rank organisation
  • Validated compatibility with Supermicro MBD-C9Z390CG-IW workstation board

Specifications

BrandNEMIX RAM
SeriesSuperMicro Server/Workstation Compatible Series Memory
ModelSupermicro DDR4 2666MHZ Non-ECC Unbuffered UDIMM
Part NumberMD21300-328K2
Capacity64GB (2 x 32GB)
SpeedDDR4 2666 (PC4 21300)
ECCNo
Buffered/RegisteredUnbuffered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemSupermicro
CAS LatencyCL19
Heat SpreaderNo
Type288-Pin DDR4 UDIMM
Rank2Rx8
FeaturesDDR4 Non- ECC Unbuffered UDIMM Motherboard Compatible
Package Content64GB (2X32GB) DDR4 2666MHZ PC4-21300 2Rx8 1.2V CL19 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

Will the 2Rx8 DDR4 modules need any firmware updates or re-seating after long uptime?

No firmware is involved with these unbuffered DDR4 UDIMMs; the 2Rx8 organisation is handled by the memory controller. If a module ever needs re-seating, power down, remove and re-insert the 288-pin sticks.

What limit appears first when the 64 GB kit runs at 2666 MT/s continuously?

The CAS latency of CL19 at 1.20 V sets the timing envelope; sustained throughput is bounded by the DDR4 2666 (PC4-21300) data rate rather than thermal throttling.

How much heat and power do the two 32 GB sticks produce during all-day workloads?

Each module operates at the standard DDR4 1.20 V without a heat spreader, so power draw stays at the JEDEC baseline for 2666 MT/s and the bare PCB dissipates heat passively.

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