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Two green DDR4 UDIMM modules, no heat spreaders, gold contacts visible

NEMIX RAM

NEMIX RAM 16GB (2x8GB) DDR4 3200 ECC UDIMM CL22 1.2V 288-pin ASRock EPYC3451D4U-2L2T2O8R memory upgrade

SKU CH-DV03-JJ83E

DDR4 3200 ECC UDIMM kit adds 16 GB in two 8 GB modules at CL22 and 1.2 V for the ASRock EPYC3451D4U-2L2T2O8R

  • Capacity16GB (2 x 8GB)
  • SpeedDDR4 3200 (PC4 25600)
  • ECCYes
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • 16GB dual-channel kit boosts server throughput
  • DDR4 3200 CL22 timing matches platform spec
  • ECC unbuffered design protects data integrity
  • 20V operation reduces power draw
  • Validated for ASRock EPYC3451D4U-2L2T2O8R motherboard

System-Specific DDR4 ECC Kit

This 16 GB kit contains two 8 GB DDR4 3200 UDIMMs built for the ASRock Rack EPYC3451D4U-2L2T2O8R motherboard. ECC unbuffered operation protects data integrity in always-on server and workstation roles. The modules run at 1.2 V with CL22 timing and use major OEM DRAM from Samsung, Micron or Hynix. No heat spreader is fitted.

Build Integration Notes

Each stick occupies a single 288-pin DDR4 slot and requires no extra power or cooling beyond standard airflow. The unbuffered design keeps the memory controller simple and leaves registered DIMM slots free for other configurations. Installing the pair in matched channels lets the platform reach the rated PC4-25600 throughput without manual tuning.

Upgrade Context

The kit replaces lower-capacity or non-ECC DDR4 modules that limit error detection or total memory headroom. Moving from a single 8 GB stick to this dual-channel 16 GB set doubles bandwidth and adds ECC coverage for critical workloads. The jump is worthwhile when the board supports 3200 MT/s and the application benefits from corrected single-bit errors.

Highlights

  • 16GB dual-channel kit boosts server throughput
  • DDR4 3200 CL22 timing matches platform spec
  • ECC unbuffered design protects data integrity
  • 20V operation reduces power draw
  • Validated for ASRock EPYC3451D4U-2L2T2O8R motherboard

Specifications

BrandNEMIX RAM
SeriesASRock Server Motherboard Compatible Series Memory
ModelASRock DDR4 3200MHZ ECC Unbuffered UDIMM
Part NumberME25600-818K2
Capacity16GB (2 x 8GB)
SpeedDDR4 3200 (PC4 25600)
ECCYes
Buffered/RegisteredUnbuffered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemASRock
CAS LatencyCL22
Heat SpreaderNo
Type288-Pin DDR4 ECC UDIMM
Rank1Rx8
FeaturesDDR4 ECC Unbuffered UDIMM Motherboard Compatible
Package Content16GB (2X8GB) DDR4 3200MHZ PC4-25600 1Rx8 1.2V CL22 288-PIN ECC Unbuffered UDIMM KIT

Questions about this item

What CAS latency does the CL22 rating impose under sustained loads?

The kit runs at CL22, so every column access adds twenty-two cycles of latency before data is returned.

How much heat do the 1.2 V unbuffered modules generate when running continuously?

At 1.20 V with no heat spreader the modules run cool enough for standard server airflow; no active cooling is required.

Which motherboard must already be installed for this kit to work?

The memory is validated for the ASRock Rack EPYC3451D4U-2L2T2O8R motherboard with 288-pin DDR4 slots.

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