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Four black DDR4 UDIMM sticks without heat spreaders

OWC

OWC 16GB (4x4GB) DDR4 2133 CL15 desktop RAM

SKU CH-EWH1-54KW6

A 16 GB kit of four 4 GB DDR4 2133 CL15 unbuffered DIMMs running at 1.2 V for desktop upgrades

  • Capacity16GB (4 x 4GB)
  • SpeedDDR4 2133 (PC4 17000)
  • CAS LatencyCL15
  • Voltage1.2V
  • ECCNo
  • Buffered/RegisteredUnbuffered

Capacity 16GB (4 x 4GB)

  • Boost multitasking with 16GB total capacity across four modules
  • Faster data rates at DDR4 2133 PC4-17000 speed
  • Responsive timing from CL15 CAS latency
  • Lower power draw at 1.2V operating voltage
  • Broad desktop fit with 288-pin unbuffered DIMM form factor

16GB DDR4 2133 quad-channel kit

This OWC kit delivers 16GB of DDR4 memory across four 4GB UDIMMs running at 2133MHz with CL15 latency. Modules operate at the standard 1.2V and use the 288-pin unbuffered non-ECC form factor. The kit is validated to JEDEC PC4-17000 specifications for broad desktop compatibility.

Suits desktop and workstation NAS upgrades

Builders expanding a four-slot desktop board or populating a workstation NAS will match the native dual-channel architecture with this quad-module set. Systems limited to two DIMM slots or requiring registered ECC memory should select a different configuration.

No heat spreaders or software included

The bare green PCBs keep the profile low for tight CPU cooler clearances while omitting RGB lighting. OWC provides a lifetime warranty with advanced replacement and free technical support, but no bundled utilities or installation media are supplied.

Highlights

  • Boost multitasking with 16GB total capacity across four modules
  • Faster data rates at DDR4 2133 PC4-17000 speed
  • Responsive timing from CL15 CAS latency
  • Lower power draw at 1.2V operating voltage
  • Broad desktop fit with 288-pin unbuffered DIMM form factor

Specifications

BrandOWC
Part Number2U1D41R8016S
Capacity16GB (4 x 4GB)
SpeedDDR4 2133 (PC4 17000)
CAS LatencyCL15
Voltage1.2V
ECCNo
Buffered/RegisteredUnbuffered
Multi-channel KitDual Channel Kit
ColorBlack
Heat SpreaderNo
Recommend UseDesktops
LED ColorNone

Other versions of this model

5 more in the same range

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

Questions about this item

What motherboard slot does this 288-pin UDIMM need?

The kit uses standard 288-pin DDR4 UDIMM slots; four free slots are required to install all four 4 GB modules.

Can I keep my existing DDR4 2133 CL15 sticks and add this kit?

Yes, if the board has spare 288-pin slots; the system will run all modules at the lowest common speed and latency.

How do I confirm the kit runs at PC4-17000 CL15 after install?

Enter the BIOS or use a system utility and check that the memory frequency shows 2133 MHz with CAS latency 15 at 1.2 V.

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