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Four green circuit boards with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 32GB (4x8GB) DDR4 2666 CL19 UDIMM memory upgrade

SKU CH-5XV1-CQ4RE

Four 8 GB DDR4 2666 CL19 UDIMM modules totalling 32 GB, validated for Supermicro workstation motherboards

  • Total capacity32 GB (4 × 8 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 32GB total capacity in a four-module kit
  • DDR4 2666 speed rated at PC4-21300
  • CL19 latency for responsive operation
  • 20V low-voltage DDR4 efficiency
  • 288-pin UDIMM form factor fits desktop DIMM slots

32GB DDR4 kit for Supermicro workstations

This 32GB kit contains four 8GB DDR4 2666 modules built for Supermicro desktop and SuperWorkstation motherboards such as the MBD-C9Z390-CG. The unbuffered non-ECC UDIMMs run at 1.2V with CL19 latency. It is suited for professionals who need a straightforward capacity increase on a validated platform.

Verify DDR4 UDIMM slots and 2666 support

Before ordering, confirm the board accepts 288-pin DDR4 UDIMM modules and can run memory at 2666 MT/s. Check that four slots are free for the 4x8GB configuration and that the system does not require registered or ECC memory. The modules use major OEM chips from Samsung, Micron or Hynix.

Standard voltage and no spreaders for quiet

At 1.2V the kit draws standard DDR4 power without extra cooling hardware. The absence of heat spreaders keeps the modules low-profile and silent, relying on case airflow alone. Under normal workloads the memory operates within JEDEC limits, adding minimal thermal load to the chassis.

How it compares

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

Price $194.99
Cheaper than about 59% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (4 × 8 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $6.09 per GB
Cheaper than about 64% 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 numberMD21300-818K4
Total capacity32 GB (4 × 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 items32 GB (4 × 8 GB) DDR4 2666 MHz PC4-21300 1Rx8 1.2 V CL19 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

Does the kit include four 8 GB DDR4 modules or must I purchase them individually?

The kit ships with four 8 GB DDR4 2666 CL19 288‑pin UDIMM modules for a total of 32 GB; no extra modules are needed.

Should I choose the 32 GB 2666 CL19 kit or a different capacity for a SuperMicro C9Z390‑CG board?

This 32 GB kit matches the board’s supported DDR4 2666 speed and 1.20 V voltage, so it is the correct capacity for four-slot population.

What does the PC4‑21300 rating mean when the modules are installed in my workstation?

PC4‑21300 indicates a peak transfer rate of 21 300 MB/s at 2666 MT/s, which the system will use at the rated CL19 latency.

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