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Green circuit board with gold edge connectors and black memory chips, no heat spreader

OWC

OWC 16GB DDR4 2400 PC4-19200 CL17 2Rx8 288-pin 1.2V Non-ECC UDIMM memory upgrade

SKU CH-DKT8-S5FP3

A single 16 GB DDR4 2400 MHz CL17 2Rx8 UDIMM module at 1.2 V, validated for QNAP TS-873U, TS-873U-RP and TS-877 NAS systems

  • Total capacity16 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 16 GB DDR4 2400 MHz CL17 boosts multitasking responsiveness
  • 2 V low-voltage design reduces power draw and heat
  • 288-pin UDIMM form factor fits QNAP TS-873U, TS-873U-RP and TS-877
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Backward compatible with 2133 MHz systems for flexible deployment

16GB DDR4 2400 Module for QNAP NAS

This 16GB DDR4 2400 UDIMM is built for QNAP TS-873U, TS-873U-RP and TS-877 systems. It replaces OEM part numbers RAM-16GDR4A0-UD-2400 and RAM-16GDR4A1-UD-2400. The module targets administrators expanding memory in these specific NAS units.

DDR4 2400 CL17 Standard Limits

The module runs at 2400MHz with CL17 latency and 1.2V voltage per JEDEC PC4-19200 specification. It is backward compatible with 2133MHz operation. The 288-pin unbuffered non-ECC design fits standard DDR4 desktop and workstation slots.

16GB Single-DIMM Capacity Headroom

A single 16GB stick adds substantial headroom for multitasking, larger file caches and concurrent virtual machines. The 2Rx8 organisation populates one slot efficiently. Builders needing more than 16GB per slot or requiring ECC error correction must choose a different module.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $84.99
Cheaper than about 69% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $5.31 per GB
Cheaper than about 73% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2U4D42R816 GB
Total capacity16 GB
Product type288-Pin DDR4 Non-ECC UDIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsQNAP TS-873U
QNAP TS-873U-RP
QNAP TS-877

Other versions of this model

5 more in the same range

Questions about this item

Should I pick the 16 GB module or look for a different capacity?

This part is a single 16 GB stick; choose it when your QNAP TS-873U, TS-873U-RP or TS-877 needs one 16 GB DDR4 2400 module to fill a free slot.

What does the 2400 MHz rating deliver once the stick is installed?

The module runs at 2400 MHz with CL17 timing, giving the NAS its rated DDR4 2400 bandwidth for snappier multitasking and larger file handling.

Is the 288-pin DDR4 interface limited to 2400 MHz or can it run slower?

The 288-pin DDR4 UDIMM is JEDEC-standard at 2400 MHz and will also operate at 2133 MHz if the system requires a lower speed.

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