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Green bare circuit board with black memory chips, gold edge connector, no heat spreader

NEMIX RAM

NEMIX RAM 16GB DDR4 2666 PC4-21300 CL19 2Rx8 1.2V 288-Pin UDIMM memory upgrade

SKU CH-7PTN-X4RFY

A 16 GB DDR4 2666 UDIMM module with CL19 latency, 2Rx8 organisation and 1.2 V operation for compatible desktop systems

  • 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 MHz boosts multitasking speed
  • CL19 latency keeps response times tight
  • 2 V operation lowers power draw
  • 288-pin UDIMM fits standard desktop slots
  • 2Rx8 dual-rank design increases memory bandwidth

Desktop DDR4 upgrade

This NEMIX RAM module adds 16 GB of DDR4 2666 memory to compatible desktop PCs and workstations. It targets users who need a single 288-pin UDIMM to increase capacity without changing voltage or rank configuration. The non-ECC unbuffered design matches mainstream consumer motherboards.

Straightforward DIMM installation

Installation follows the standard UDIMM procedure: power down, open the case, align the notch and press until the latches click. The only common issue is mixing this 2Rx8 rank layout with existing modules of a different rank, which can prevent the system from posting. Verify the motherboard supports 2Rx8 before adding.

Capacity and speed match

The 16 GB capacity at 2666 MHz (PC4-21300) with CL19 latency is the single specification that determines fit. If your board requires a different speed, rank or voltage, this module will not work. Buyers who need ECC, registered buffering or a different density should select another part.

How it compares

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

Price $97.99
Cheaper than about 68% 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 $6.12 per GB
Cheaper than about 64% 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 lineHynix Server/Workstaion Compatible Series Memory
Model nameHynix 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 systemsHynix
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

How can I verify the module is running at 2666 MT/s and CL19 after installation?

Open your BIOS or a tool such as CPU-Z and confirm the memory frequency shows 2666 MT/s with timings of 19-19-19 at 1.20 V.

What does the package contain and is anything else required?

The box includes one 16 GB 288-pin DDR4 UDIMM; no extra cables, brackets or heat spreaders are needed for installation.

Should I choose the 2Rx8 16 GB stick or look for a different rank configuration?

This 2Rx8 16 GB module matches the Hynix HMA82GU6DJR8N?VK specification; select it when your board requires a dual-rank 16 GB DIMM.

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