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Green printed circuit board with black memory chips in a single row along one side, gold edge connector at bottom, no heat spreader

OWC

OWC 16GB DDR4 2400 CL17 2Rx8 288-pin 1.2V Non-ECC UDIMM for QNAP TS-1677X TS-432PXU TS-432XU

SKU CH-MD0V-D0CR3

16GB DDR4 2400 CL17 UDIMM module upgrades QNAP TS-1677X, TS-432PXU and TS-432XU systems

  • Total capacity16 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 16 GB capacity expands NAS memory for heavier workloads
  • DDR4 2400 MHz speed delivers responsive data access
  • CL17 latency keeps timing tight for smooth operation
  • 2 V low voltage reduces power draw and heat
  • 288-pin UDIMM fits QNAP TS-1677X, TS-432PXU and TS-432XU models

System-Specific DDR4 Upgrade

This OWC memory module is built for QNAP NAS models TS-1677X, TS-432PXU, TS-432PXU-RP, TS-432XU and TS-432XU-RP. It provides a single 16GB DDR4 2400 CL17 2Rx8 288-pin 1.2V Non-ECC UDIMM to expand system memory capacity.

JEDEC DDR4 2400 CL17 Specification

The module runs at DDR4 2400 (PC4-19200) with CAS latency 17 and 1.2V operation. It is unbuffered, non-ECC, dual-rank 2Rx8 and fully JEDEC compliant. Backward compatibility with 2133MHz systems is supported.

Low-Voltage Unbuffered Operation

At 1.2V the module draws minimal power and generates little heat without a spreader. Unbuffered design keeps electrical loading light for stable operation in the listed QNAP NAS units during continuous workloads.

How it compares

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

Price $92.99
Cheaper than about 68% 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 $5.81 per GB
Cheaper than about 67% of the 20,941 comparable items (median $8.19 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 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-1677X
QNAP TS-432PXU
QNAP TS-432PXU-RP
QNAP TS-432XU
QNAP TS-432XU-RP

Other versions of this model

5 more in the same range

Questions about this item

Will the 2400MHz speed run at full rate in my TS-432XU?

The module is rated at DDR4 2400 PC4-19200 CL17 and will operate at that speed if the NAS memory controller supports it; otherwise it will downshift to 2133MHz automatically.

Is the 288-pin DDR4 UDIMM the correct form factor for the TS-1677X?

Yes, this is a 288-pin unbuffered non-ECC DDR4 UDIMM, which matches the slot type used in the listed QNAP models.

Does the 16GB stick need a heat spreader to fit inside the TS-432PXU?

No heat spreader is fitted, so the low-profile module clears standard NAS DIMM sockets without clearance issues.

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