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Four green DDR4 RDIMM modules in anti-static tray

OWC

OWC 1TB (4×256GB) DDR4 3200 CL22 ECC Registered RDIMM Kit for QNAP TS-h2490FU

SKU CH-TFW8-GM007

Four 256 GB DDR4 3200 CL22 ECC registered RDIMMs add 1 TB to a QNAP TS-h2490FU

Capacity 1TB (4 x 256GB)

  • ECC registered RDIMMs protect data integrity in servers
  • 1 TB kit (4 × 256 GB) expands QNAP TS-h2490FU memory capacity
  • DDR4 3200 CL22 at 1.2 V delivers rated server performance
  • JEDEC and RoHS compliant modules tested in-house for reliability
  • Matches Samsung M393ABG40M52-CAE, Hynix HMAT14JXSRB120N/122N and Supermicro MEM-DR425MI-ER32

1TB DDR4-3200 ECC RDIMM kit for QNAP TS-h2490FU

This kit provides 1TB of DDR4 3200 PC4-25600 CL22 ECC Registered memory in four 256GB modules. It is designed for the QNAP TS-h2490FU server platform where ECC Registered DIMMs are required. Standard desktop computers cannot use this memory type and it must not be mixed with unbuffered or load-reduced DIMMs.

DDR4-3200 Registered ECC limits

The modules operate at 3200 MT/s with CL22 latency and 1.2V voltage using 8Rx4 octal-rank organisation. Registered ECC adds a register clock cycle that reduces electrical load on the memory controller, allowing higher capacities per channel. Mixing with unbuffered or load-reduced memory is not supported and will prevent the system from booting.

Four-module installation in TS-h2490FU

Install all four 288-pin RDIMMs in the matching slots of the TS-h2490FU following the motherboard population order. Ensure each module clicks fully into place; incomplete seating is the most common cause of boot failure or memory errors. Do not combine these Registered DIMMs with any unbuffered or load-reduced modules already present in the system.

How it compares

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

Price $6,061.99
Pricier than about 82% of the 21,161 comparable items (median $397.99).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

No published specifications for this item yet.

Other versions of this model

5 more in the same range

Questions about this item

Should I pick the 4×256 GB kit or a different capacity for the TS-h2490FU?

The kit provides four 256 GB DDR4 3200 CL22 ECC registered RDIMMs for a total of 1 TB, matching the TS-h2490FU's supported configuration.

What does the 3200 MT/s rating deliver inside the TS-h2490FU?

The modules run at DDR4 3200 (PC4-25600) with CL22 latency, giving the TS-h2490FU its maximum supported memory bandwidth for multi-threaded workloads.

Is the 288-pin DDR4 interface the limiting factor for speed in this server?

Yes, the 288-pin DDR4 ECC registered RDIMM interface caps transfer rates at the JEDEC 3200 MT/s specification used by the TS-h2490FU.

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