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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

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 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.

How it compares

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

Price $149.99
Cheaper than about 62% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (2 × 8 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $9.37 per GB
Typical for this category: the median of 20,941 items is $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 numberME25600-818K2
Total capacity16 GB (2 × 8 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 rank1Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASRock
In the box
Included items16 GB (2 × 8 GB) DDR4 3200 MHz PC4-25600 1Rx8 1.2 V 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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