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Green rectangular circuit board with gold edge connectors and black memory chips, no heat spreader

NEMIX RAM

NEMIX RAM 16GB DDR4 2666 2Rx8 CL19 1.2V 288-Pin UDIMM SuperMicro memory upgrade

SKU CH-HTW0-F3449

16 GB DDR4 2666 UDIMM for SuperMicro systems, CL19 1.2 V non-ECC unbuffered module

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 16 GB DDR4 2666 MT/s capacity for responsive multitasking
  • CL19 latency at 1.2 V for efficient operation
  • 2Rx8 dual-rank organisation improves memory throughput
  • 288-pin UDIMM form factor fits SuperMicro server boards
  • Built with Samsung, Micron or Hynix chips for proven reliability

16GB DDR4 UDIMM for SuperMicro systems

This 16GB DDR4 2666 UDIMM is built for SuperMicro servers and workstations that accept non-ECC unbuffered memory. It suits administrators expanding memory capacity in compatible platforms without requiring registered modules.

Single 16GB module in the package

The box contains one 288-pin UDIMM rated at PC4-21300 with CL19 timing at 1.20V. No heat spreader is included, so airflow in the chassis must handle thermal management for the 2Rx8 organisation.

Verify non-ECC unbuffered support and free slots

Check that the target SuperMicro system supports DDR4 non-ECC unbuffered UDIMMs and has an available 288-pin slot. Confirm the platform accepts 2Rx8 density at 2666 speed before ordering.

How it compares

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

Price $84.99
Cheaper than about 69% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $5.31 per GB
Cheaper than about 73% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineSuperMicro Server/Workstation Compatible Series Memory
Model nameSupermicro DDR4 2666 MHz Non-ECC Unbuffered UDIMM
Part numberMD21300-628K1
Total capacity16 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 rank2Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSupermicro
In the box
Included items16 GB (1 × 16 GB) DDR4 2666 MHz PC4-21300 2Rx8 1.2 V CL19 288-PIN Non-ECC Unbuffered UDIMM

Questions about this item

Will the 1.20V DDR4 modules need active cooling or replacement after long-term server use?

The modules run at 1.20V without a heat spreader; sustained server loads rely on chassis airflow, and no periodic replacement is required beyond standard ECC error monitoring.

What limit appears first when the 2Rx8 CL19 sticks run continuously at 2666 MT/s?

The CL19 latency at 2666 MT/s sets the throughput ceiling before voltage or thermal throttling becomes a factor.

How much heat and power does the 16GB UDIMM draw during all-day operation?

At 1.20V the 16GB UDIMM draws minimal power and produces low heat; adequate case airflow keeps temperatures in check without extra cooling.

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