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Green circuit board with black memory chips and gold edge connectors

OWC

OWC 8GB DDR4 2666MHz CL19 1.2V UDIMM desktop RAM

SKU CH-XCYR-PVQFP

Single 8GB DDR4 2666MHz CL19 1.2V unbuffered UDIMM for desktop PCs, workstations and NAS systems, backward compatible with 2133MHz and 2400MHz speeds

  • Capacity8GB
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCNo
  • Buffered/RegisteredUnbuffered

Capacity 8GB

  • 8GB capacity lets you run more apps and larger files
  • 2666MHz DDR4 speed boosts system responsiveness for everyday workloads
  • CL19 latency at 1.2V balances quick access with low power draw
  • JEDEC and RoHS compliant for a warranty-safe upgrade in desktops and NAS
  • Backward compatible with 2133MHz and 2400MHz systems for flexible installation

OWC 8GB DDR4 2666MHz UDIMM

This OWC module is an 8GB DDR4 2666MHz CL19 unbuffered UDIMM designed for desktop PCs, workstations and NAS systems. It operates at the standard 1.2V and uses a 288-pin layout without a heat spreader or lighting. The single rank memory provides a straightforward capacity increase for everyday multitasking and larger file handling.

Check motherboard DDR4 slot and speed support

Before ordering, verify that your board accepts DDR4 UDIMMs and can run at 2666MHz, 2400MHz or 2133MHz speeds. The module is non-ECC and unbuffered, so it will not work in platforms that require registered or error-correcting memory. Confirm the system has a free 288-pin slot and that the BIOS is current enough to recognise JEDEC standard timings.

Steady operation at JEDEC voltage and timings

Under sustained load the module runs at its rated 1.2V with CL19 latency, maintaining the JEDEC specified PC4-21300 data rate without overclocking headroom. Because there is no heat spreader, airflow across the PCB helps keep temperatures stable during long sessions. The memory is tested for continuous compatibility with desktop, workstation and NAS workloads.

Highlights

  • 8GB capacity lets you run more apps and larger files
  • 2666MHz DDR4 speed boosts system responsiveness for everyday workloads
  • CL19 latency at 1.2V balances quick access with low power draw
  • JEDEC and RoHS compliant for a warranty-safe upgrade in desktops and NAS
  • Backward compatible with 2133MHz and 2400MHz systems for flexible installation

Specifications

BrandOWC
Part Number2U6D41R808GB
Capacity8GB
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCNo
Buffered/RegisteredUnbuffered
ColorBlack
Heat SpreaderNo
Recommend UseDesktops
LED ColorNone

Other versions of this model

2 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Does the 8GB DDR4 2666MHz CL19 1.2V UDIMM come alone or with extra parts?

The package contains a single 8GB unbuffered 288-pin DDR4 module rated PC4-21300 CL19 at 1.2V; no heat spreader, cables or additional components are included

Should I pick the 8GB 2666MHz CL19 stick or a different capacity for my desktop?

This listing is for one 8GB module; if your board has free slots you can add more identical sticks, but no other capacities are offered under this part number

What does the 2666MHz PC4-21300 CL19 rating actually deliver in a real desktop?

The module runs at 2666MHz with CL19 latency and 1.2V; it will also operate at 2400MHz or 2133MHz if the system requires those lower speeds

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