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Four green DDR4 UDIMM sticks without heat spreaders

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR4 2666MHz CL19 UDIMM memory upgrade

SKU CH-3T8X-VK076

A 128GB kit of four 32GB DDR4 UDIMMs running at 2666MHz CL19 for compatible Supermicro workstations

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 128 GB total capacity for demanding workloads using four 32 GB modules
  • DDR4 2666 MT/s speed rated at PC4-21300 for responsive data throughput
  • CL19 CAS latency timed at 1.20 V for stable operation
  • 288-pin UDIMM form factor fits compatible Supermicro desktop and workstation boards
  • 2Rx8 dual-rank organisation with major OEM DRAM chips for reliable density

NEMIX RAM 128GB DDR4 Kit

This NEMIX RAM kit supplies 128GB of DDR4 memory in a matched set of four 32GB UDIMM modules. It operates at 2666MHz with CL19 latency and a standard 1.20V voltage. The unbuffered, non-ECC design targets desktop workstations and compatible Supermicro platforms requiring high-density DDR4 upgrades.

Suits Supermicro DDR4 UDIMM builds

Builders populating four DIMM slots on a supported Supermicro desktop or workstation board will find this kit validated for that environment. It is not for systems requiring registered or ECC memory, nor for platforms limited to lower maximum module densities or different DDR generations. Buyers needing error correction or registered signalling must select a different specification.

Check DDR4 UDIMM slot count and CPU support

Verify the motherboard provides four 288-pin DDR4 UDIMM slots and that the installed processor supports 2666MHz operation at this total capacity. Confirm the board accepts 2Rx8 non-ECC unbuffered modules without requiring registered DIMMs. Consult the system manual for approved population rules and maximum memory per channel before ordering.

How it compares

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

Price $654.99
Pricier than about 55% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $5.12 per GB
Cheaper than about 75% 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 numberMD21300-328K4
Total capacity128 GB (4 × 32 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 items128 GB (4 × 32 GB) DDR4 2666 MHz PC4-21300 2Rx8 1.2 V CL19 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

What motherboard slot does each 32GB DDR4 2666 CL19 module use?

Each module plugs into a standard 288-pin DDR4 UDIMM slot on the motherboard.

Will these 1.2V CL19 sticks run at rated speed if I keep my existing slower DDR4 modules?

The system will clock all installed DDR4 memory down to the speed of the slowest module present.

How can I confirm the kit is running at 2666 MT/s with CL19 timings after installation?

Check the memory frequency and CAS latency reported in BIOS or a system-information tool such as CPU-Z.

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