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Green rectangular DDR4 stick with gold edge contacts and black chips, no heat spreader

OWC

OWC 16GB DDR4 2400 ECC Unbuffered UDIMM desktop RAM

SKU CH-JY51-H953F

A single 16 GB DDR4 2400 ECC unbuffered UDIMM running at CL17 and 1.2 V for desktop, workstation, server or NAS systems

  • Total capacity16 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Recommended forWorkstations, Servers, and NAS Systems
  • 16GB DDR4 2400MHz module expands workstation capacity
  • ECC error correction protects data integrity in servers
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • 2V low voltage reduces system power draw
  • Backward compatible with 2133MHz systems for flexible deployment

16 GB DDR4 ECC UDIMM for NAS and servers

This 16 GB DDR4 2400 module runs at PC4-19200 with CL17 latency and 1.2 V operation. It is an unbuffered ECC DIMM designed for workstations, servers and NAS systems such as Synology RackStation units. The single 288-pin stick provides error-correcting memory for data-critical workloads.

Suits ECC-capable platforms needing 2400 MHz

Systems that require registered or load-reduced DIMMs cannot use this module. Builds without ECC support in the chipset or CPU will not benefit from the error-correction feature. Non-ECC consumer desktops and laptops should look for standard unbuffered DDR4 without ECC.

Verify motherboard accepts DDR4 2400 ECC

Check that the platform supports 288-pin DDR4 at 2400 MT/s with ECC and unbuffered operation. The module is backward compatible with 2133 MHz buses. Confirm the number of available slots and the maximum capacity per slot before ordering.

How it compares

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

Price $111.99
Pricier than about 54% of the 3,647 comparable items (median $90.99).
Total capacity 16 GB
Typical for this category: the median of 3,251 items is 16 GB.
Price per GB $7.00 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 number2E4D42R816 GB
Total capacity16 GB
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportYes
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forWorkstations, Servers, and NAS Systems
More details
LED lightingNone

Questions about this item

Will this module work in a Synology RS2418+ NAS?

Yes, the module is listed as compatible with the RS2418+ and other RackStation models including RS1619xs+, RS2818RP+ and RS3617xs+.

Does the memory require a heat spreader for reliable operation?

No heat spreader is included; the module runs at standard 1.2 V and is designed for typical workstation, server and NAS airflow.

Can I install this alongside existing 2133 MHz DDR4 ECC UDIMMs?

Yes, the module is backward compatible with 2133 MHz systems and will run at the lower speed when mixed.

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