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Green circuit board with black memory chips and gold edge connectors

OWC

OWC 16GB DDR4 2133 CL15 1.2V Non-ECC UDIMM desktop RAM

SKU CH-656F-EH4YY

16 GB DDR4 UDIMM running at 2133 MHz with CL15 latency and 1.2 V operation for desktop and NAS upgrades

  • Total capacity16 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Recommended forDesktops
  • 16 GB capacity lets you run more apps and larger files simultaneously
  • DDR4 2133 speed with CL15 latency delivers responsive desktop performance
  • 2 V operation reduces power draw and heat in your system
  • 288-pin unbuffered DIMM fits standard desktop and workstation slots
  • JEDEC and RoHS compliant for a warranty-safe upgrade

Capacity and fit

This OWC module provides 16GB of DDR4 memory in a standard 288-pin UDIMM form factor. It runs at 2133 MT/s with a CL15 latency and operates at 1.2V. The stick is unbuffered and non-ECC, making it suitable for desktop PCs, workstations and compatible NAS units.

Pre-installation checks

Verify that your motherboard or NAS accepts DDR4 UDIMM modules at 2133 MT/s and 1.2V. Confirm the board supports non-ECC, unbuffered memory and has a free 288-pin slot. Check the maximum supported capacity per slot and the total system limit before ordering.

Thermals and power

The module draws 1.2V and carries no heat spreader, relying on case airflow for cooling. Under normal desktop workloads it runs quietly and adds minimal power draw to the system. No active cooling is required for typical operation.

How it compares

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

Price $84.99
Typical for this category: the median of 3,647 items is $90.99.
Total capacity 16 GB
Typical for this category: the median of 3,251 items is 16 GB.
Price per GB $5.31 per GB
Cheaper than about 68% of the 3,251 comparable items (median $6.75 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number2U1D42R816 GB
Total capacity16 GB
Product colorBlack
Performance
Rated speedDDR4 2133 (PC4 17000)
Memory
CAS latencyCL15
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forDesktops
More details
LED lightingNone

Questions about this item

Does the 288-pin UDIMM arrive alone or with any extra parts?

The module ships as a single 16GB stick; no cables, screws or additional components are included.

Should I choose the 2133 CL15 1.2V version or a different speed?

Select this 2133 CL15 1.2V module when your system specifies DDR4-2133; other speeds will not match the required timing and voltage.

What does the PC4-17000 rating mean once the RAM is installed?

It confirms the stick runs at 2133 MT/s with CL15 latency at the standard 1.2V JEDEC voltage for compatible desktops and NAS units.

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