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Green circuit board with black memory chips and gold edge connector

OWC

OWC 16GB DDR4 3200 CL22 2Rx8 288-pin 1.2V ECC Registered RDIMM memory upgrade

SKU CH-CKW6-T8YPY

A 16 GB DDR4 3200 CL22 2Rx8 ECC registered RDIMM for QNAP ES1686dc and ES2486dc servers

  • Total capacity16 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx8

Capacity 16GB

  • ECC registered design protects data integrity in servers
  • 16 GB DDR4 3200 CL22 module boosts multitasking capacity
  • 2 V operation reduces power draw under load
  • 2Rx8 dual-rank layout increases memory density per slot
  • Validated for QNAP ES1686dc and ES2486dc systems

16GB DDR4 ECC Registered RDIMM

This 16GB DDR4 3200 module is an ECC Registered RDIMM built for QNAP ES1686dc and ES2486dc systems. It operates at 1.2V with CL22 latency and a 2Rx8 rank configuration. The 288-pin form factor fits the designated server slots. It is not compatible with standard desktop computers or unbuffered memory.

Sustained server workload stability

ECC Registered design corrects single-bit errors and reduces electrical load on the memory controller during continuous operation. CL22 timing at DDR4 3200 delivers consistent throughput for virtualisation and storage tasks. The module runs at the JEDEC standard 1.2V without requiring over-voltage. Registered buffering helps maintain signal integrity across fully populated channels.

No heat spreader, direct slot fit

The bare PCB allows close DIMM spacing inside the QNAP chassis without clearance issues. Gold-edge contacts on the 288-pin interface ensure reliable seating in the server memory slots. Single-module upgrades are supported, though matched-capacity pairs optimise channel balance. The registered buffer adds minimal height, fitting the standard RDIMM profile.

How it compares

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

Price $96.99
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 $6.06 per GB
Cheaper than about 65% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number3R2D42R816 GB
Total capacity16 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsQNAP ES1686dc
QNAP ES2486dc

Other versions of this model

3 more in the same range

Questions about this item

How much power does the 1.2V DDR4 3200 module draw when the QNAP ES1686dc runs continuously?

The module operates at the standard 1.2 volts specified for DDR4 3200. Actual power draw depends on the server workload and the number of DIMMs installed.

Does the 288-pin ECC Registered RDIMM require a matching registered DIMM in every slot of the ES2486dc?

Yes. Registered memory cannot be mixed with unbuffered modules, and OWC recommends identical capacity, speed and manufacturer across all populated slots.

Will the 16GB 2Rx8 CL22 stick work alongside the original QNAP RAM-16GDR4ECT0-RD-3200 modules already in my ES1686dc?

It is built as a direct replacement for that QNAP part number, so it matches the same DDR4 3200 registered ECC specification and will operate together when installed in the same channel configuration.

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