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

OWC

OWC 32GB DDR4 2400 CL17 ECC Registered RDIMM 2Rx4 QNAP TES-1885U TES-3085U TS-1685

SKU CH-7MCM-4TVVQ

32 GB DDR4 2400 ECC registered RDIMM for QNAP TES-1885U, TES-3085U and TS-1685 servers

  • Total capacity32 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4
  • ECC registered design protects data integrity in servers
  • 32GB capacity expands memory for demanding workloads
  • DDR4 2400 speed matches QNAP system specifications
  • 2V operation reduces power draw in NAS units
  • 288-pin RDIMM form factor fits TES-1885U TES-3085U TS-1685

32GB DDR4 ECC RDIMM for QNAP NAS

This 32GB DDR4 2400 CL17 registered DIMM is built for QNAP TES-1885U, TES-3085U and TS-1685 systems. It delivers 288-pin ECC registered operation at 1.2V for server and workstation reliability. Buyers needing unbuffered memory for a standard desktop cannot use this module.

Sustained load behaviour with ECC registered design

The registered buffer and ECC circuitry correct single-bit errors and reduce electrical load on the memory controller during continuous operation. This helps maintain data integrity in multi-user NAS workloads such as virtualisation, database services and large file transfers over long periods.

Verify slot count and population rules before

Confirm your QNAP model has free 288-pin DDR4 RDIMM slots and check the manufacturer's population guide for rank mixing limits. This 2Rx4 module must not be mixed with unbuffered DIMMs and the total installed capacity must stay within the system's supported maximum.

How it compares

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

Price $204.99
Cheaper than about 58% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $6.41 per GB
Cheaper than about 61% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2R4D42R432 GB
Total capacity32 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsQNAP TES-1885U
QNAP TES-3085U
QNAP TS-1685

Other versions of this model

5 more in the same range

Questions about this item

How much power does the 1.2V DDR4 2400 module draw when the NAS runs continuously?

The module operates at 1.2 volts, the standard DDR4 voltage, keeping power draw and heat low during all-day server workloads.

Does my QNAP TES-1885U already support ECC registered RDIMMs, or do I need a different motherboard?

The TES-1885U, TES-3085U and TS-1685 are designed for DDR4 ECC registered RDIMMs, so this 32 GB module fits the existing memory slots without hardware changes.

Can I add this 2Rx4 registered stick alongside the original unbuffered DIMMs in my TS-1685?

No, registered and unbuffered memory cannot be mixed; all slots must use ECC registered RDIMMs for the system to operate correctly.

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