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OWC

OWC 16GB DDR4 2666 CL19 ECC UDIMM desktop RAM

SKU CH-HTB7-XYKXG

16 GB DDR4 2666 CL19 ECC unbuffered UDIMM for desktops, workstations, servers and NAS, also runs at 2133 and 2400 MHz

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Recommended forWorkstations, Servers, and NAS Systems
  • ECC protection prevents data errors in critical workloads
  • 2666 MHz speed delivers responsive multitasking performance
  • 16 GB capacity handles large files and virtual machines
  • 2 V operation reduces power draw and heat
  • Backward compatible with 2133 MHz and 2400 MHz systems

ECC UDIMM for Workstations and NAS

This 16GB DDR4 module targets workstations, servers and NAS systems that require error-correcting memory. It runs at 2666MHz with CL19 latency and 1.2V operation. The unbuffered design fits standard 288-pin desktop slots.

Thermals and Power in Normal Use

No heat spreader is fitted, so the module relies on case airflow for cooling. At 1.2V the power draw stays low during typical workloads. Silent operation is assured because no active cooling is present.

JEDEC DDR4 2666 CL19 ECC Specification

The single deciding specification is the JEDEC-standard DDR4 2666 CL19 ECC unbuffered profile. It also runs at 2133MHz and 2400MHz for backward compatibility. Verify your platform accepts ECC UDIMMs before purchase.

How it compares

Measured against everything we stock in Desktop RAM, at today’s prices. Recalculated every night.

Price $120.99
Pricier than about 56% of the 3,647 comparable items (median $90.99).
Total capacity 16 GB
Typical for this category: the median of 3,251 items is 16 GB.
Price per GB $7.56 per GB
Pricier than about 55% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameOWC
Part number2E6D42R816 GB
Total capacity16 GB
Product colorBlack
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportYes
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forWorkstations, Servers, and NAS Systems
More details
LED lightingNone

Questions about this item

How do I install the 16GB DDR4 2666 CL19 288-pin ECC UDIMM and what step is often missed?

Align the notch on the module with the slot key, press down firmly until both side clips click shut, then verify in BIOS that the speed reads 2666 MHz and ECC is enabled.

What maintenance or replacement will this 1.2V ECC unbuffered module need over time?

No scheduled maintenance is required; keep slots dust-free and replace the module only if system logs report correctable ECC errors that persist after re-seating.

What limit appears first on this CL19 2Rx8 stick during sustained heavy workloads?

The CL19 latency at 2666 MHz sets the throughput ceiling, and the 1.2 V JEDEC voltage prevents further frequency headroom without overclocking support.

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