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Two green DDR4 ECC UDIMM sticks without heat spreaders

NEMIX RAM

NEMIX RAM 16GB (2x8GB) DDR4 3200 CL22 ECC UDIMM Kit ASRock Server Compatible

SKU CH-2HA4-2WQMP

ECC UDIMM kit adds 16 GB of DDR4-3200 memory to compatible ASRock server boards

  • Capacity16GB (2 x 8GB)
  • SpeedDDR4 3200 (PC4 25600)
  • ECCYes
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • 16 GB dual-channel kit expands server memory capacity
  • DDR4 3200 CL22 timing delivers responsive data throughput
  • ECC unbuffered design detects and corrects single-bit errors
  • 2 V operation reduces power draw in dense configurations
  • Validated for ASRock Rack B550D4 motherboard series compatibility

Capacity and compatibility

This kit delivers 16 GB of DDR4 ECC UDIMM memory in two 8 GB modules. It is validated for ASRock Rack B550D4 motherboards including the B550D4-4L, B550D4ID-2L2T, B550D4M, B550D4U and B550D4U-2T models.

Upgrade path and value

The modules replace slower or non-ECC DDR4 DIMMs in compatible ASRock Rack platforms. The jump is worth it when you need error-correcting memory for data integrity in server or workstation workloads.

Build integration

Each stick is a 288-pin unbuffered UDIMM running at 1.2 V with a CL22 latency profile. No heat spreader is fitted, so clearance is minimal, and the dual-rank 1Rx8 organisation leaves additional slots free for future expansion.

Highlights

  • 16 GB dual-channel kit expands server memory capacity
  • DDR4 3200 CL22 timing delivers responsive data throughput
  • ECC unbuffered design detects and corrects single-bit errors
  • 2 V operation reduces power draw in dense configurations
  • Validated for ASRock Rack B550D4 motherboard series compatibility

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 288-pin DDR4 UDIMM slot spacing does this 16 GB kit require on the motherboard?

The modules are standard 288-pin DDR4 UDIMMs that fit any desktop or server board with DDR4 DIMM slots; the kit is validated for ASRock Rack B550D4 series motherboards.

Which BIOS setting often gets missed when installing this ECC UDIMM kit on an ASRock Rack board?

Enable ECC support in the BIOS after seating both 8 GB sticks; the memory runs at 1.2 V and CL22 by default, but error correction stays off until the option is turned on.

How can I verify long-term reliability of these Samsung, Micron or Hynix 1Rx8 chips in a server?

Each module is stress-tested under load before shipping; monitor corrected-error counters in the OS or IPMI to catch early degradation.

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