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Four green DDR4 UDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 64GB (4x16GB) DDR4 2666 PC4-21300 ECC UDIMM memory upgrade

SKU CH-X63S-03YH1

64 GB DDR4 ECC UDIMM kit at 2666 MHz with CL19 latency for ASUS server motherboards

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 64 GB total capacity with four 16 GB modules
  • DDR4 2666 speed rated at PC4-21300 bandwidth
  • ECC unbuffered design detects and corrects data errors
  • 2 V low-voltage operation reduces power draw
  • 288-pin UDIMM form factor fits compatible ASUS server boards

64 GB DDR4 ECC UDIMM kit

This 64 GB kit contains four 16 GB DDR4 2666 PC4-21300 ECC UDIMM modules. It runs at 1.2 V with CL19 latency and uses a 288-pin unbuffered design. The kit is built for ASUS server motherboards including the P11C-C/4L, P11C-M/4L, P11C-X and P11C-X/AUDIO models.

Suited for ECC server upgrades

System administrators expanding compatible ASUS server platforms will appreciate the validated compatibility and error-correcting capability. Builders needing non-ECC memory, registered DIMMs, higher speeds or different pin layouts should look at other memory types.

Four-module capacity and headroom

The 64 GB total across four slots handles virtualisation workloads, database caching and multi-threaded server tasks comfortably. Workloads that demand registered memory, speeds above 2666 MT/s or capacities beyond 64 GB will exceed this kit's specification.

How it compares

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

Price $533.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $8.34 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 lineASUS Server Motherboard Compatible Series Memory
Model nameASUS DDR4 2666 MHz ECC Unbuffered UDIMM
Part numberME21300-618K4
Total capacity64 GB (4 × 16 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
Heat spreaderNo
Memory rank1Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASUS
In the box
Included items64 GB (4 × 16 GB) DDR4 2666 MHz PC4-21300 2Rx8 1.2 V CL19 288-PIN ECC Unbuffered UDIMM KIT

Questions about this item

Do I need four free 288-pin DDR4 slots on my ASUS server motherboard to install this 64GB kit?

Yes, the kit contains four 16GB UDIMMs and each one occupies a single 288-pin DDR4 slot on the board.

Can I mix these CL19 2666 MT/s ECC modules with slower DDR4 ECC sticks I already have?

The system will run all modules at the speed and timings of the slowest installed kit, so older CL19 or higher-latency sticks will work but limit overall throughput.

How do I confirm the full 64GB is recognised and ECC is active after installation?

Check the BIOS memory summary for 64GB total and ECC enabled, then verify in the OS with a tool that reports ECC status such as dmidecode or CPU-Z.

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