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Green bare circuit board with black memory chips and gold edge connectors

OWC

OWC 16GB DDR4 3200 ECC UDIMM CL22 1Rx8 1.2V 288-pin memory upgrade

SKU CH-PG56-HD5SC

16GB DDR4 3200 ECC UDIMM module adds error-correcting memory to compatible QNAP TVS-h1288X and TVS-h1688X NAS systems

  • Total capacity16 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank1Rx8
  • 16 GB DDR4 3200 MHz capacity boosts multitasking
  • ECC UDIMM protects data integrity for NAS workloads
  • JEDEC-standard 1.2 V CL22 module ensures stable operation
  • Backward compatible with 2133, 2400, 2666, 2933 MHz speeds
  • Validated for QNAP TVS-h1288X and TVS-h1688X systems

Target NAS upgrade

This 16GB DDR4 ECC UDIMM is built for QNAP TVS-h1288X and TVS-h1688X systems. It replaces part number RAM-16GDR4ECK1-UD-3200 with a single 1Rx8 module. Administrators expanding memory in those NAS units get a validated, warranty-safe upgrade without mixing capacities.

Thermals and power

The module runs at 1.2V and carries no heat spreader, relying on the chassis airflow of the target NAS. JEDEC-standard DDR4 3200 operation keeps power draw within the platform’s default envelope. ECC circuitry adds error correction without measurable latency or thermal penalty at CL22.

Build and installation

A bare 288-pin green PCB slides into any empty UDIMM slot on the supported QNAP models. The unbuffered design means no register delay and direct compatibility with the motherboard’s memory controller. Backward compatibility with 2133, 2400, 2666 and 2933MHz buses allows the stick to clock down automatically if the system requires it.

How it compares

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

Price $119.99
Cheaper than about 65% 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 $7.50 per GB
Cheaper than about 54% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number3E2D41R816 GB
Total capacity16 GB
Product type288-Pin DDR4 ECC UDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
CAS latencyCL22
ECC supportYes
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsQNAP TVS-h1288X
QNAP TVS-h1688X

Other versions of this model

5 more in the same range

Questions about this item

How do I install the 288-pin DDR4 ECC UDIMM in my QNAP TVS-h1288X, and what step do people often miss?

Power off the NAS, open the chassis, align the notch on the 288-pin module with the slot key, press firmly until both retention clips click, then power on and verify the 16GB appears in the QNAP system information; the step most often missed is seating the module fully so both clips engage.

What maintenance or replacement will this 16GB DDR4 3200 module need over its service life?

The module has no heat spreader and no moving parts, so no routine maintenance is required; replacement is only needed if a memory error occurs or if you later expand beyond the current capacity.

What limit appears first when this CL22 1.2V ECC UDIMM runs sustained workloads in a TVS-h1688X?

The CAS latency of CL22 at 3200 MT/s sets the timing boundary, and the fixed 1.2V operating voltage limits headroom before stability becomes the limiting factor under continuous heavy use.

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