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Two green DDR4 UDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 16GB (2x8GB) DDR4 2666 CL19 1.2V UDIMM SuperMicro MBD-C9Z390-CG memory upgrade

SKU CH-35S1-S4KHA

16 GB DDR4-2666 CL19 1.2 V 288-pin UDIMM kit validated for SuperMicro MBD-C9Z390-CG motherboards

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 16 GB dual-channel kit boosts multitasking headroom
  • DDR4 2666 CL19 timing balances speed and stability
  • 2 V operation keeps power draw low
  • 288-pin UDIMM form factor fits standard desktop slots
  • Validated for SuperMicro MBD-C9Z390-CG motherboard

NEMIX RAM 16GB DDR4 2666 Kit

This 16GB kit contains two 8GB DDR4 UDIMM modules rated at 2666MHz with CL19 latency. It is built for the SuperMicro MBD-C9Z390-CG motherboard and other compatible SuperMicro desktop workstations. The modules are non-ECC and unbuffered for standard desktop use.

DDR4 2666 CL19 1.20V specification

The decisive specification is the DDR4 2666 (PC4-21300) speed combined with 1.20V voltage and CL19 timing. Your system must accept DDR4 UDIMM memory at this exact speed and voltage for the kit to function correctly. Verify the motherboard supports 288-pin unbuffered non-ECC modules before purchase.

Standard voltage low-profile operation

Operating at the standard DDR4 voltage of 1.20V, these modules draw minimal power and run cool without a heat spreader. The bare PCB design keeps the profile low for tight slots while silent passive cooling handles normal workloads. No active cooling or extra airflow is required for typical desktop operation.

How it compares

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

Price $83.99
Cheaper than about 70% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (2 × 8 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $5.25 per GB
Cheaper than about 73% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineSuperMicro Server/Workstation Compatible Series Memory
Model nameSupermicro DDR4 2666 MHz Non-ECC Unbuffered UDIMM
Part numberMD21300-818K2
Total capacity16 GB (2 × 8 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 systemsSupermicro
In the box
Included items16 GB (2 × 8 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 DDR4 2666 speed mean once the modules are installed in a SuperMicro MBD-C9Z390-CG system?

The kit runs at 2666 MT/s with CL19 timing, delivering the standard DDR4 2666 data rate the board’s memory controller expects.

What does the PC4-21300 label on these UDIMMs tell me about the interface limit?

PC4-21300 is the JEDEC designation for DDR4 2666, confirming the modules operate at the 2666 MT/s ceiling of that standard.

Will the 288-pin UDIMM form factor fit the DIMM slots on the MBD-C9Z390-CG motherboard?

Yes, the kit uses the standard 288-pin DDR4 UDIMM layout that matches the desktop DIMM sockets on that board.

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