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Four green DDR4 UDIMM sticks, no heat spreaders, gold contacts visible

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR4 3200MHz ECC Unbuffered UDIMM CL22 1.2V 288-Pin Kit

SKU CH-4GFW-5S01Z

DDR4 ECC unbuffered UDIMM kit providing 128GB across four 32GB modules at 3200MHz CL22 1.2V for ASRock server motherboards

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 128GB total capacity across four 32GB modules
  • DDR4 3200 speed rated at PC4-25600 bandwidth
  • ECC unbuffered design detects and corrects data errors
  • CL22 CAS latency at 1.2V operating voltage
  • 288-pin UDIMM form factor validated for ASRock EPYC3451D4U-2L2T2O8R

Capacity and Purpose

This 128GB kit delivers four 32GB DDR4 ECC unbuffered UDIMMs for ASRock Rack EPYC3451D4U-2L2T2O8R systems. It targets administrators who need registered-style density without registered signalling in a validated server platform.

Build and Connectors

Each module uses a 288-pin DDR4 interface at 1.20V with CL22 timing and 2Rx8 organisation. Major OEM Samsung, Micron or Hynix chips are stress tested under load; the absence of heat spreaders keeps height low for dense chassis airflow.

Bundled Value

The package contains the matched 4x32GB kit ready for population of all four channels. Lifetime replacement warranty and US-based IT support back the validated compatibility, reducing qualification time for mission-critical deployments.

How it compares

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

Price $857.99
Pricier than about 59% 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 $6.70 per GB
Cheaper than about 59% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineASRock Server Motherboard Compatible Series Memory
Model nameASRock DDR4 3200 MHz ECC Unbuffered UDIMM
Part numberME25600-328K4
Total capacity128 GB (4 × 32 GB)
Product type288-Pin DDR4 ECC UDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL22
ECC supportYes
Buffer typeUnbuffered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASRock
In the box
Included items128 GB (4 × 32 GB) DDR4 3200 MHz PC4-25600 2Rx8 1.2 V CL22 288-PIN ECC Unbuffered UDIMM KIT

Questions about this item

What does the PC4-25600 rating mean for real-world DDR4-3200 speed?

PC4-25600 is the peak transfer rate label for DDR4-3200; the kit runs at 3200 MT/s with CL22 latency at 1.2 V.

Will these 288-pin UDIMMs fit the ASRock Rack EPYC3451D4U-2L2T2O8R motherboard?

Yes, the 288-pin DDR4 ECC UDIMM form factor matches the board's unbuffered DIMM slots; the kit is validated for that model.

How do I install the four 32 GB modules correctly?

Power off, open the chassis, align each module's notch with the slot key, press firmly until the retention clips click, then verify 128 GB in BIOS.

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