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Two green DDR4 ECC UDIMM sticks without heat spreaders

NEMIX RAM

NEMIX RAM DDR4 2666 16GB (2x8GB) ECC Unbuffered UDIMM CL19 1.2V for ASUS WS C246M PRO/SE

SKU CH-X5SZ-WWA27

A 16 GB DDR4 ECC unbuffered UDIMM kit running at 2666 MHz with CL19 latency, verified for ASUS WS C246M PRO and PRO/SE workstation motherboards

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered

Size 16GB 2X8GB

  • ECC protection stops silent data corruption and crashes
  • Exact DDR4-2666 CL19 1.2V spec matches board requirements
  • 16 GB dual-channel kit uses 1Rx8 unbuffered UDIMMs
  • 288-pin form factor fits ASUS WS C246M PRO/SE slots
  • Major-brand Samsung Micron Hynix chips ensure consistent quality

Exact-match DDR4 ECC kit for ASUS workstations

This 16 GB kit delivers two 8 GB DDR4 2666 UDIMMs with ECC, 1.2 V operation and CL19 timing. The modules are validated for the ASUS WS C246M PRO and WS C246M PRO/SE motherboards so the memory controller recognises the full capacity at rated speed without manual adjustment.

Suited for ECC workloads.

Builders who need error-correcting memory for data-integrity tasks such as scientific computing, rendering or server workloads will benefit from the on-the-fly correction. Systems that require registered DIMMs, SODIMMs or non-ECC unbuffered modules cannot use this kit.

Fits 288-pin UDIMM slots on the C246 platform

The 288-pin unbuffered ECC form factor matches the board's DIMM sockets and population rules, leaving no need for adapters or BIOS workarounds. Installing the pair frees remaining slots for future capacity expansion while keeping the memory subsystem within the board's validated configuration.

How it compares

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

Price $109.99
Cheaper than about 66% 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 $6.87 per GB
Cheaper than about 58% of the 20,941 comparable items (median $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 numberME21300-818K2
Total capacity16 GB (2 × 8 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 rank1Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASUS
In the box
Included items16 GB 2 × 8 GB DDR4 2666 MHz PC4-21300 1Rx8 1.2 V 288-PIN ECC UDIMM KIT

Other versions of this model

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Questions about this item

What motherboard must I already have for this 288-pin DDR4 2666 kit to work?

The kit is validated for the ASUS WS C246M PRO and WS C246M PRO/SE workstation motherboards that accept 288-pin unbuffered ECC UDIMMs.

Will this 1Rx8 CL19 kit run alongside any existing DDR4 2666 ECC UDIMMs I keep in the same board?

Yes, if the installed modules are also DDR4 2666 unbuffered ECC UDIMMs at 1.2 V, the memory controller will operate all DIMMs at the common 2666 MT/s speed and CL19 timing.

How can I confirm the 16 GB kit is recognised at full speed after installation?

Enter the BIOS or UEFI and verify the memory frequency reads 2666 MHz, the capacity shows 16 GB, and ECC status is reported as enabled.

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