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Four green DDR4 ECC UDIMM modules, 288-pin, no heat spreader

OWC

OWC 64GB (4×16GB) DDR4 2666 ECC UDIMM memory upgrade for ASUSTOR AS7112RDX AS7116RDX

SKU CH-N6PX-PBF2B

64 GB kit of four 16 GB DDR4 2666 ECC UDIMM modules for ASUSTOR AS7112RDX and AS7116RDX NAS systems

  • Capacity64GB (4 x 16GB)
  • Type288-Pin DDR4 ECC UDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 64GB (4 x 16GB)

  • 64GB total capacity from four 16GB modules for heavier workloads
  • DDR4 2666 speed rated at PC4-21300 for faster data throughput
  • ECC unbuffered design detects and corrects single-bit errors automatically
  • JEDEC and RoHS compliant for warranty-safe operation in ASUSTOR AS7112RDX and AS7116RDX
  • Backward compatible with 2133MHz and 2400MHz systems for flexible deployment

Tailored 64 GB kit for ASUSTOR NAS

This OWC kit delivers 64 GB of DDR4 2666 memory in four 16 GB unbuffered ECC UDIMMs built specifically for the ASUSTOR AS7112RDX and AS7116RDX LOCKERSTOR models. It targets administrators who need the maximum supported capacity for virtualisation, container workloads or large ZFS pools.

Fills every slot with validated modules

Each 288-pin DIMM runs at 1.2 V with CL19 timing and 2Rx8 organisation, matching the JEDEC PC4-21300 standard the NAS firmware expects. The kit occupies all four memory channels so no slots remain free, and the modules are backward compatible with 2133 MHz and 2400 MHz operation if the system downclocks automatically.

Steady throughput with error correction

ECC circuitry detects and corrects single-bit errors during extended file transfers, scrub jobs or database commits, preventing silent data corruption. Unbuffered design keeps latency low while the 1.2 V rating limits heat output, so the modules maintain rated 2666 MHz speeds throughout multi-hour workloads without thermal throttling.

Highlights

  • 64GB total capacity from four 16GB modules for heavier workloads
  • DDR4 2666 speed rated at PC4-21300 for faster data throughput
  • ECC unbuffered design detects and corrects single-bit errors automatically
  • JEDEC and RoHS compliant for warranty-safe operation in ASUSTOR AS7112RDX and AS7116RDX
  • Backward compatible with 2133MHz and 2400MHz systems for flexible deployment

Specifications

BrandOWC
Part Number2E6D42R8064S
Capacity64GB (4 x 16GB)
Type288-Pin DDR4 ECC UDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemASUSTOR AS7112RDX
ASUSTOR AS7116RDX

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Questions about this item

Will the CL19 latency become a bottleneck during sustained workloads?

CL19 is the rated CAS latency for these DDR4 2666 modules; latency does not change under load, so the limit you see first is the 2666 MT/s bandwidth ceiling.

How much heat and power do four 16 GB sticks draw when the NAS runs 24/7?

Each module runs at 1.2 V without a heat spreader; total kit power stays within standard DDR4 UDIMM limits and passive airflow in the ASUSTOR chassis is sufficient.

Do I need to populate all four DIMM slots for this kit to work in my AS7112RDX?

The AS7112RDX and AS7116RDX support four UDIMM slots; the kit is designed to fill all four, but the system will also run with fewer modules installed.

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