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Single green 288-pin DDR4 RDIMM module with black memory chips and no heat spreader

OWC

OWC 128GB DDR4 2400MHz CL17 4Rx4 ECC Registered RDIMM 1.2V 288-pin Server RAM

SKU CH-7DA4-QAEC8

A single 128GB DDR4 ECC registered RDIMM running at 2400MHz CL17 for servers and workstations

  • Total capacity128 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank4Rx4

Capacity 128GB

Show 2 more

Rank 4Rx4

  • High-capacity 128GB single module simplifies dense server configurations
  • ECC registered design detects and corrects data errors for reliability
  • DDR4 2400MHz CL17 timing balances speed and stability
  • Low 1.2V operation reduces power draw in always-on systems
  • 288-pin RDIMM form factor fits standard server and workstation slots

128GB DDR4 ECC Registered RDIMM

This single 128GB DDR4 module delivers registered ECC memory for servers, workstations and NAS systems. It operates at 2400MHz with CL17 latency and 1.2V power draw. The 4Rx4 rank configuration targets high-density slots in compatible enterprise platforms.

Capacity and headroom at 128GB

A 128GB stick provides substantial headroom for virtualisation, large databases and memory-intensive workloads. Registered signalling and ECC protect data integrity under sustained load. Systems limited to lower per-slot capacities or unbuffered memory cannot use this module.

Build quality and 288-pin mounting

The module follows JEDEC DDR4 standards with 288-pin gold contacts and no heat spreader. Registered buffering reduces electrical load on the memory controller, enabling stable operation in multi-DIMM configurations. Compatibility is restricted to platforms that explicitly support DDR4 registered ECC RDIMMs.

How it compares

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

Price $693.99
Pricier than about 75% of the 6,523 comparable items (median $188.99).
Total capacity 128 GB
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $5.42 per GB
Cheaper than about 69% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number2R4D44R4128G
Total capacity128 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.2 V

Other versions of this model

5 more in the same range

Questions about this item

Will this 128GB DDR4 2400MHz 4Rx4 registered ECC module work alongside older DDR4 RDIMMs already in my server?

It will only work if the existing modules are also DDR4 registered ECC at 1.2V; mixing with unbuffered or non-ECC DIMMs is not supported and the platform may downclock all memory to the slowest common speed.

How can I verify the 128GB module is running at PC4-19200 CL17 after installation?

Check the BIOS memory information or an OS tool such as dmidecode; it should report 2400 MT/s, CAS 17, 1.2V, registered ECC, and a single 128GB 4Rx4 rank configuration.

Does the box contain only the 288-pin RDIMM or are any cables, brackets or additional parts included?

The package contains the single 128GB DDR4 2400MHz CL17 4Rx4 registered ECC RDIMM only; no cables, brackets, heat spreaders or other accessories are supplied.

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