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Green DDR4 UDIMM circuit board with black memory chips, no heat spreader, 288-pin edge connector

NEMIX RAM

NEMIX RAM 16GB DDR4 3200 ECC Unbuffered UDIMM CL22 1.2V 2Rx8 288-pin ASRock Server Compatible memory upgrade

SKU CH-4XGK-MJQZ4

16 GB DDR4-3200 ECC unbuffered UDIMM with CL22 latency and 1.2 V operation for ASRock server boards

  • Total capacity16 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • ECC protection guards data integrity for server workloads
  • 3200 MT/s DDR4 speed matches platform requirements
  • 2 V operation reduces power draw per module
  • 2Rx8 dual-rank layout increases memory density
  • Validated for ASRock Rack E3C252D4U series motherboards

NEMIX RAM 16GB DDR4 3200 ECC UDIMM

This 16GB DDR4 3200 ECC unbuffered UDIMM operates at 1.2V with CL22 latency and a 2Rx8 rank configuration. It uses a 288-pin form factor and is validated for ASRock Rack motherboards including the E3C252D4U, E3C252D4U-2T and E3C252D4ID-2T. Modules are built with major OEM chips from Samsung, Micron or Hynix and ship without a heat spreader.

Server builders needing ECC integrity

This module suits administrators upgrading ASRock Rack platforms that require ECC unbuffered memory for data integrity. It is not for systems that only accept registered or load-reduced DIMMs. It is also not for desktop boards lacking ECC support in the BIOS or chipset. Buyers needing capacities beyond a single 16GB stick should look at larger kits or higher-density modules.

CL22 latency at DDR4 3200

The CAS latency of CL22 at 3200 MT/s determines the module's timing profile and must match the motherboard's supported memory timings for stable operation. Verify that the target ASRock Rack board lists CL22 3200 ECC UDIMM compatibility before purchase. Mismatched timings can prevent boot or cause instability even if the physical pin count and voltage align.

How it compares

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

Price $122.99
Cheaper than about 65% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $7.69 per GB
Typical for this category: the median of 20,941 items is $8.19 per GB.

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineASRock Server Motherboard Compatible Series Memory
Model nameASRock DDR4 3200 MHz ECC Unbuffered UDIMM
Part numberME25600-628K1
Total capacity16 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 items16 GB (1 × 16 GB) DDR4 3200 MHz PC4-25600 2Rx8 1.2 V CL22 288-PIN ECC Unbuffered UDIMM

Questions about this item

Will the 1.2 V DDR4 ECC UDIMM need any firmware updates or component swaps over its service life?

The module has no heat spreader and no user-serviceable parts, so no firmware updates or component swaps are required after installation.

What thermal or electrical limit appears first when the 3200 MHz stick runs continuously in an ASRock Rack E3C252D4U?

The 1.2 V operating voltage and CL22 latency set the power envelope; sustained loads will hit the JEDEC thermal limit before any electrical ceiling.

How much noise and heat does the unbuffered 288-pin module generate during all-day operation?

With no heat spreader or moving parts the stick is silent, and at 1.2 V its heat output stays within standard DDR4 UDIMM thermal limits.

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