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Four green DDR4 UDIMM sticks without heat spreaders

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR4 2933 CL21 1.2V UDIMM memory upgrade

SKU CH-Y5PP-NF05H

128 GB kit of four 32 GB DDR4 2933 CL21 unbuffered UDIMMs for compatible Supermicro systems

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 128 GB total capacity from four 32 GB modules
  • DDR4 2933 MHz speed for responsive workloads
  • CL21 latency at 1.2 V for efficient operation
  • 288-pin UDIMM form factor fits compatible Supermicro boards
  • 2Rx8 dual-rank organisation using major OEM DRAM chips

Capacity & Target System

This 128 GB kit uses four 32 GB DDR4 2933 UDIMM modules built for Supermicro workstations such as the 5039AD-I and MBD-C9X299-PGF. It suits IT professionals who need maximum non-ECC capacity on supported platforms. Unbuffered operation keeps latency low for memory-intensive workloads.

Sustained Load Behaviour

Modules run at 1.20 V with CL21 timings and 2Rx8 organisation, delivering steady throughput during long render or virtualisation sessions. Rigorous stress testing under load is performed before shipment to confirm stability. The major OEM Samsung, Micron or Hynix chips maintain consistent performance without thermal throttling.

Build & Daily Handling

Bare green PCBs without heat spreaders fit tight DIMM slots and simplify cleaning in dense server chassis. Each 288-pin UDIMM seats with standard keying for quick tool-free upgrades. Lifetime replacement coverage backs the hardware for the system's service life.

How it compares

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

Price $771.99
Pricier than about 57% 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 $6.03 per GB
Cheaper than about 65% 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 2933 MHz Non-ECC Unbuffered UDIMM
Part numberMD23400-328K4
Total capacity128 GB (4 × 32 GB)
Product type288-Pin DDR4 UDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL21
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 2933 MHz PC4-23400 2Rx8 1.2 V CL21 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

Does the 1.2V DDR4 2933 kit add noticeable heat or fan noise when all four slots run all day?

These modules operate at the standard 1.20V DDR4 voltage and have no heat spreader, so thermal output is typical for unbuffered UDIMMs at this speed and density.

What must my motherboard provide for the 128GB (4x32GB) kit to function?

The board needs four 288-pin DDR4 UDIMM slots, support for 2Rx8 non-ECC unbuffered modules at 2933 MT/s, and a memory controller able to address 128GB total capacity.

Will the CL21 2Rx8 modules work alongside older DDR4 sticks I keep in the same system?

Mixing ranks, speeds or latencies can prevent the system from posting or force all memory to the lowest common settings; for stability, populate all four slots with this matched kit.

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