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

NEMIX RAM

NEMIX RAM 16GB DDR4 2666 CL19 1Rx8 1.2V 288-Pin UDIMM memory upgrade

SKU CH-KCA3-YCWPP

16 GB DDR4 2666 CL19 1Rx8 UDIMM adds responsive capacity to compatible Samsung desktops

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 16 GB capacity expands desktop multitasking headroom
  • DDR4 2666 speed matches PC4-21300 bandwidth rating
  • CL19 latency at 1.2 V keeps power draw low
  • 1Rx8 single-rank layout simplifies motherboard compatibility
  • 288-pin UDIMM form factor fits standard desktop DIMM slots

Samsung-compatible 16GB DDR4 2666 UDIMM

This NEMIX RAM module delivers 16GB of DDR4 memory at 2666MHz with CL19 latency. It uses a 1Rx8 unbuffered, non-ECC design and runs at 1.20V. The 288-pin UDIMM form factor fits standard desktop DIMM slots. It is built with Samsung, Micron, or Hynix components and validated for Samsung desktop systems.

Suits Samsung desktop owners needing a single 16GB

Buyers upgrading a compatible Samsung desktop PC will find this module matches the M378A2G43MX3-CTD specification. Systems requiring ECC error correction or registered memory cannot use this unbuffered non-ECC stick. Builders needing DDR5 speeds or capacities beyond 16GB per module should select a different memory type.

2666MHz DDR4 speed with CL19 timing

The module operates at DDR4 2666 (PC4-21300) with a CAS latency of 19. This speed and timing combination determines whether the memory matches the motherboard's supported specification. Verify that your Samsung system accepts DDR4 2666 CL19 unbuffered UDIMMs before purchase.

How it compares

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

Price $95.99
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 $6.00 per GB
Cheaper than about 65% 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 lineSamsung Desktop PC Compatible Series Memory
Model nameSamsung DDR4 2666 MHz Non-ECC Unbuffered UDIMM
Part numberMD21300-618K1
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 rank1Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSamsung
In the box
Included items16 GB (1 × 16 GB) DDR4 2666 MHz PC4-21300 1Rx8 1.2 V CL19 288-PIN Non-ECC Unbuffered UDIMM

Questions about this item

What motherboard slot does this 288-Pin DDR4 UDIMM require?

It fits a standard desktop DDR4 DIMM slot keyed for 288 pins; the board must accept unbuffered non-ECC modules at 1.2 V.

Can I keep my current Samsung DDR4 modules while adding this 1Rx8 stick?

Yes, it is built to match Samsung M378A2G43MX3-CTD specifications so it will operate alongside identical-speed Samsung DDR4 DIMMs.

How do I verify the CL19 2666 MT/s timing is active after install?

Open BIOS or a tool such as CPU-Z and confirm the memory reports 2666 MT/s, CAS 19, 1.20 V and single-rank 1Rx8 organisation.

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