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Green rectangular DDR4 memory module with gold edge connectors and black chips, no heat spreader

OWC

OWC 64GB DDR4 3200 CL22 ECC Registered DIMM QNAP TS-h2490FU memory upgrade

SKU CH-HGTG-W2M6F

Single 64 GB DDR4 3200 ECC registered DIMM for QNAP TS-h2490FU servers

  • Total capacity64 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB

  • 64 GB capacity expands QNAP TS-h2490FU memory headroom
  • ECC registered design protects data integrity in server workloads
  • DDR4 3200 CL22 timing delivers responsive throughput
  • 2 V operation reduces power draw per module
  • 288-pin 2Rx4 form factor fits the validated QNAP slot

QNAP TS-h2490FU 64GB DDR4 ECC RDIMM

This OWC module adds 64GB of DDR4 3200 ECC registered memory to the QNAP TS-h2490FU. It runs at 1.2V with CL22 latency and a 2Rx4 rank configuration on a 288-pin DIMM. The part replaces QNAP RAM-64GDR4ECK0-RD-3200 for a direct upgrade path.

Suits NAS admins expanding TS-h2490FU capacity.

Workstation and server boards that accept DDR4 ECC RDIMMs can use this module. Standard desktop motherboards cannot use registered ECC memory, and mixing it with unbuffered DIMMs will prevent boot. Buyers needing non-ECC or unbuffered memory for consumer platforms should look elsewhere.

64GB single-module capacity decides fit

The 64GB density per DIMM determines how many slots are needed to reach a target capacity. Verify the TS-h2490FU slot count and maximum supported memory per slot before purchasing. The 2Rx4 organisation and CL22 timing must match the system's memory controller requirements for stable operation.

How it compares

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

Price $351.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $5.50 per GB
Cheaper than about 70% 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 number3R2D42R464 GB
Total capacity64 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsQNAP TS-h2490FU

Other versions of this model

5 more in the same range

Questions about this item

Will the 288-pin DDR4 DIMM fit the QNAP TS-h2490FU memory slots?

Yes, this 288-pin DDR4 3200 registered ECC module is built for the QNAP TS-h2490FU and matches the required form factor.

How do I install the 64GB DDR4 3200 CL22 registered ECC module, and what step is often missed?

Power down the NAS, open the chassis, seat the 288-pin DIMM firmly until the retention clips click, then verify in the QNAP firmware that all 64GB are recognised at 3200 MT/s.

What maintenance or replacement will the 64GB DDR4 3200 ECC registered DIMM need over time?

No routine maintenance is required; if a memory error appears, replace the module with an identical 64GB DDR4 3200 CL22 2Rx4 registered ECC DIMM to keep compatibility.

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