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Green PCB DDR4 UDIMM module with black chips and gold contacts

OWC

OWC 32GB DDR4 2666 CL19 1.2V Non-ECC UDIMM 2U6D42R832GB

SKU CH-KNPQ-E2S4S

A 32GB DDR4 2666 CL19 1.2V non-ECC UDIMM module compatible with desktop PCs, workstations and NAS systems, and backward compatible with 2133MHz and 2400MHz

  • Total capacity32 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Recommended forDesktops
  • 32GB capacity enables heavy multitasking and large file handling
  • DDR4 2666 speed with CL19 latency delivers responsive desktop performance
  • 2V operation reduces power draw and heat output
  • 288-pin unbuffered non-ECC design fits standard desktop and NAS slots
  • Backward compatible with 2133MHz and 2400MHz systems for flexible upgrades

32GB DDR4 2666 Module

This 32GB DDR4 2666 CL19 UDIMM targets desktop PCs, workstations and NAS systems needing a JEDEC-standard memory upgrade. It runs at 1.2V without ECC or a heat spreader and matches the QNAP RAM-32GDR4S0-UD-2666 specification exactly.

Simple DIMM Installation

The 288-pin unbuffered DIMM fits standard desktop slots and requires no tools beyond opening the chassis. Backward compatibility with 2133MHz and 2400MHz systems reduces the risk of speed mismatch. The most common issue is mixing modules with different latencies or voltages, which can prevent the system from posting.

32GB Single-Module Capacity

A single 32GB stick provides substantial headroom for multitasking, large-file editing and virtual machines on platforms that support this density per slot. Capacity limits appear when the motherboard or NAS firmware caps maximum memory per channel or total installed RAM below the module size.

How it compares

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

Price $192.99
Pricier than about 67% 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 $6.03 per GB
Cheaper than about 58% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameOWC
Part number2U6D42R832 GB
Total capacity32 GB
Product colorBlack
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forDesktops
More details
LED lightingNone

Questions about this item

Will this 32 GB DDR4 2666 module work in a desktop that currently runs 2133 MHz or 2400 MHz memory?

Yes, the module is backward compatible with 2133 MHz and 2400 MHz systems and will run at the speed supported by the motherboard.

Does this module fit a standard 288-pin desktop DIMM slot and operate at the standard 1.2 V?

Yes, it is a 288-pin unbuffered non-ECC UDIMM designed for 1.2 V desktop platforms.

Is the memory JEDEC-standard and safe for a warranty-covered system upgrade?

The module is fully JEDEC-compliant and ROHS-compliant, making it a warranty-safe upgrade for compatible desktops, workstations and NAS systems.

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