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Green circuit board with black memory chips and gold edge connector

NEMIX RAM

NEMIX RAM 16GB DDR4 2666MHz CL19 ECC UDIMM ASUS Pro WS C246-ACE memory upgrade

SKU CH-MZXF-W0N2B

16 GB DDR4-2666 ECC UDIMM with CL19 timing and 1.2 V operation for the ASUS Pro WS C246-ACE workstation motherboard

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered

Size 16GB

  • ECC corrects single-bit errors on the fly preventing silent data corruption
  • Exact-match 16GB DDR4-2666 CL19 1.2V 2Rx8 UDIMM recognised at full rated speed
  • Verified fit for ASUS Pro WS C246-ACE 288-pin Unbuffered ECC slot requirements
  • Major OEM Samsung Micron Hynix chips deliver consistent reliability for workstation workloads
  • Lifetime replacement warranty with free US-based technical support included

Exact-match DDR4 ECC UDIMM for ASUS C246-ACE

This 16 GB DDR4-2666 module is built to the precise rank, voltage and timing the ASUS Pro WS C246-ACE workstation motherboard expects. It installs as a 288-pin unbuffered ECC UDIMM so the board recognises full capacity at rated speed without manual tuning.

CL19 at 1.2 V decides compatibility

The memory controller on this platform requires CAS latency 19 at 1.20 V with a 2Rx8 organisation. Any different latency, voltage or rank structure will prevent the system from booting or force a down-clock that wastes the installed capacity.

Passive operation keeps thermals simple

Without a heat spreader the module relies on chassis airflow and runs at the standard 1.20 V DDR4 voltage. Power draw stays low, noise is limited to case fans, and temperatures remain within normal limits for typical workstation workloads.

How it compares

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

Price $121.99
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 $7.62 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 lineNEMIX RAM Original Series Memory
Model nameDDR4 ECC Unbuffered UDIMM Memory
Part numberME21300-628K1
Total capacity16 GB
Product type288-Pin DDR4 ECC UDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL19
ECC supportYes
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASUS
In the box
Included items16 GB DDR4 2666 MHz PC4-21300 2Rx8 1.2 V 288-PIN ECC UDIMM KIT

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Questions about this item

Will the 2666 MHz rating run at that speed in my ASUS Pro WS C246-ACE?

The module is spec-matched to the board's DDR4 2666 (PC4-21300) memory controller, so it is recognized at full capacity and runs at the rated 2666 MHz with CL19 timing.

Does the 288-pin ECC UDIMM interface limit me to unbuffered modules only?

Yes, this is a 288-pin unbuffered ECC UDIMM; the motherboard requires this exact form factor and will not accept registered RDIMMs or SODIMMs.

What physical clearance does the 16 GB stick need inside the case?

The module has no heat spreader, so it fits the standard 288-pin DDR4 UDIMM slot height used by the ASUS Pro WS C246-ACE without extra clearance.

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