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Four green DDR4 DIMM sticks in anti-static packaging

Computer Memory Solutions

Computer Memory Solutions CM4096722400ECCR 128GB (4x32GB) DDR4 2400 ECC Registered DIMM memory upgrade

SKU CH-CBKQ-R7JWJ

128 GB DDR4-2400 ECC registered memory kit (four 32 GB DIMMs) validated for QNAP TES-1885U, TES-3085U and TS-1685 NAS servers

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL17
  • Memory timings17-17-17
  • Rated voltage1.2 V
  • Boosts NAS capacity to 128 GB with four 32 GB modules
  • ECC registered design protects data integrity in critical workloads
  • DDR4 2400 speed delivers 19200 MT/s bandwidth for responsive performance
  • Low 1.2 V operation reduces power draw and heat output
  • Guaranteed compatible with QNAP TES-1885U, TES-3085U and TS-1685 series

QNAP NAS memory upgrade

This 128GB kit contains four 32GB DDR4 2400 ECC registered DIMMs built for QNAP TES-1885U, TES-3085U and TS-1685 servers. It targets administrators who need the maximum supported capacity for virtualisation or heavy multi-user workloads.

Sustained load behaviour

ECC and registered signalling protect data integrity during continuous operation. The modules run at 1.2V with CL17 timing and will clock down automatically to match the installed processor, maintaining stability over long periods.

Installation notes

The 288-pin DIMMs fit the four memory sockets in the listed QNAP models. No heat spreaders are present, so airflow in the chassis must be adequate. Mixing with non-ECC or unbuffered memory is not supported by the platform.

How it compares

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

Price $152.99
Cheaper than about 61% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $1.20 per GB
Cheaper than about 96% 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 nameComputer Memory Solutions
Model nameCM4096722400ECCR
Total capacity128 GB (4 × 32 GB)
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2400 (PC4 19200)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL17
Memory timings17-17-17
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsQNAP NAS Servers TES-1885U, TES-3085U, TS-1685
In the box
Included items4 Memory RAM Sticks

Questions about this item

Does the 1.2 V DDR4 2400 registered ECC kit add noticeable heat or fan noise when the NAS runs 24/7?

The modules run at standard 1.2 V without a heat spreader; registered ECC DIMMs of this density typically add minimal thermal load, so existing NAS cooling handles continuous operation without extra noise.

What must the buyer already own for this 4 × 32 GB kit to work?

A QNAP TES-1885U, TES-3085U or TS-1685 NAS with four free 288-pin DDR4 slots and a processor that supports 128 GB maximum memory.

Will the CL17 2400 MHz sticks clock down automatically if the NAS CPU only supports lower speeds?

Yes, the memory will clock down to the optimal speed supported by the installed processor model.

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