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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

  • Total capacity16 GB (4 × 4 GB)
  • Rated speedDDR4 2133 (PC4 17000)
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Kit configurationDual Channel Kit

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.

How it compares

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

Price $105.99
Typical for this category: the median of 3,647 items is $90.99.
Total capacity 16 GB (4 × 4 GB)
Typical for this category: the median of 3,251 items is 16 GB.
Price per GB $6.62 per GB
Typical for this category: the median of 3,251 items is $6.75 per GB.

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Specifications

Product
Brand nameOWC
Part number2U1D41R8016S
Total capacity16 GB (4 × 4 GB)
Product colorBlack
Performance
Rated speedDDR4 2133 (PC4 17000)
Memory
CAS latencyCL15
ECC supportNo
Buffer typeUnbuffered
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forDesktops
More details
LED lightingNone

Other versions of this model

5 more in the same range

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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