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Black 288-pin DDR4 UDIMM module with no heat spreader

OWC

OWC 32GB DDR4 2666 ECC Unbuffered UDIMM desktop RAM

SKU CH-NHCJ-KZ9TA

32 GB DDR4 2666 ECC unbuffered UDIMM for desktop PCs, workstations, servers and NAS systems with CL19 latency at 1.2 V

  • Total capacity32 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Recommended forWorkstations, Servers, and NAS Systems
  • ECC protection guards data integrity in critical workloads
  • 32 GB capacity expands multitasking headroom for demanding apps
  • DDR4 2666 speed delivers responsive throughput at 1.2 V
  • JEDEC-standard design ensures warranty-safe upgrades across systems
  • Backward compatible with 2133 and 2400 MHz platforms

32 GB DDR4 2666 ECC UDIMM

This 32 GB DDR4 2666 module delivers error-correcting code memory for desktop PCs, workstations, servers and NAS systems. It runs at PC4-21300 with CL19 latency and 1.2 V operation. The unbuffered 288-pin design fits standard DDR4 DIMM slots.

JEDEC standard unbuffered DIMM

The module follows JEDEC specifications and is ROHS compliant for a warranty-safe upgrade. Its 2Rx8 organisation and black PCB install directly into 288-pin DDR4 slots without a heat spreader. Backward compatibility with 2133 MHz and 2400 MHz systems allows flexible deployment.

Low voltage ECC thermals

Operating at 1.2 V keeps power draw and heat output modest during continuous workloads. The absence of a heat spreader relies on case airflow for cooling, which is typical for unbuffered ECC DIMMs in server and NAS chassis. Silent operation is assured because no active cooling is required.

How it compares

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

Price $252.99
Pricier than about 72% of the 3,647 comparable items (median $90.99).
Total capacity 32 GB
Higher than about 70% of the 3,251 comparable items (median 16 GB).
Price per GB $7.91 per GB
Pricier than about 58% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameOWC
Part number2E6D42R832 GB
Total capacity32 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

Does the DDR4 2666 PC4-21300 module run at CL19 or a tighter latency?

It runs at CL19 as specified. The JEDEC-standard timing is fixed at that value for this speed grade.

Will the 288-pin unbuffered DIMM fit a standard desktop motherboard slot?

Yes. The 288-pin UDIMM form factor matches the standard DDR4 desktop slot used in workstations, servers and NAS systems.

How is the module installed and what step do people often miss?

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

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