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Eight green DDR4 ECC registered DIMMs in anti-static tray

OWC

OWC 128GB (8x16GB) DDR4 2400 CL17 ECC Registered RDIMM 1.2V 288-pin server RAM

SKU CH-A0J4-0N37T

Eight 16 GB DDR4 2400 CL17 ECC registered RDIMMs totalling 128 GB at 1.2 V for server and workstation upgrades

  • Total capacity128 GB (8 × 16 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 128GB (8 x 16GB)

Show 2 more

Rank 2Rx4

  • 128GB total capacity from eight 16GB modules
  • DDR4 2400 speed with CL17 latency for responsive server workloads
  • ECC registered design detects and corrects data errors in critical systems
  • 2V operation reduces power draw and heat in dense configurations
  • 288-pin RDIMM form factor fits compatible server, workstation and NAS platforms

128GB DDR4 ECC Registered Server Kit

This kit provides 128GB of DDR4 ECC registered memory across eight 16GB modules. It is designed for servers, workstations and NAS systems that require registered DIMMs. The modules operate at 2400MHz with CL17 latency and 1.2V voltage. They use a 288-pin form factor and 2Rx4 rank organisation.

Suited for registered DIMM platforms only

This memory suits administrators upgrading or building systems that specifically support DDR4 ECC registered RDIMMs. It will not work in standard desktop computers or laptops that require unbuffered non-ECC modules. It also cannot be mixed with unbuffered memory in the same platform. Buyers needing unbuffered ECC or non-ECC SODIMMs should look elsewhere.

Registered ECC with 2Rx4 organisation

The registered buffer and on-die ECC provide the error correction and signal integrity required by multi-socket server chipsets. The 2Rx4 rank structure affects how many modules a memory controller can address per channel. Verify that your platform supports registered RDIMMs and the 2Rx4 configuration before purchasing.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $840.99
Pricier than about 78% of the 6,523 comparable items (median $188.99).
Total capacity 128 GB (8 × 16 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $6.57 per GB
Cheaper than about 58% of the 6,064 comparable items (median $7.25 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 number2R4D42R4128K
Total capacity128 GB (8 × 16 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.2 V

Other versions of this model

5 more in the same range

Questions about this item

How can I verify the 8x16GB DDR4 2400 CL17 ECC Registered RDIMM kit is operating correctly after installation?

Enter the server BIOS or UEFI and confirm all 128GB is detected at 2400 MT/s with CL17 timings and ECC enabled; then run a multi-pass memory diagnostic to validate error correction.

What ships with the OWC 128GB DDR4 2400 kit and what must I source separately?

The box contains eight 16GB 288-pin DDR4 2400 CL17 2Rx4 ECC Registered RDIMM modules; no cables, brackets or additional hardware are included.

Which capacity or version of this OWC DDR4 2400 ECC Registered RDIMM line should I select for my server?

Choose this 128GB (8 x 16GB) kit when your platform supports Registered ECC RDIMMs and you need the full 128GB across eight slots; other capacities in the same speed and rank configuration are available for smaller upgrades.

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