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Green 288-pin DDR4 server DIMM with black chips no heat spreader

OWC

OWC 128GB DDR4 3200 ECC Registered RDIMM 288-Pin 4Rx4 1.2V CL22 Server RAM

SKU CH-7NCY-KK019

High-capacity 128GB DDR4 3200 ECC registered RDIMM with CL22 latency and 1.2V operation for server upgrades

  • Total capacity128 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank4Rx4
  • 128GB capacity expands server memory headroom for virtualisation workloads
  • DDR4 3200 speed delivers PC4-25600 bandwidth for data-intensive applications
  • ECC registered design detects and corrects single-bit errors automatically
  • 4Rx4 organisation maximises density within a single 288-pin DIMM slot
  • 2V operation reduces power draw while maintaining JEDEC compliance

128GB DDR4 ECC Registered Server Memory

This 128GB DDR4 3200 ECC Registered RDIMM is built for workstations and servers that require error-correcting, registered memory. It operates at PC4-25600 speed with CL22 latency and a 1.2V supply. The module uses a 288-pin 4Rx4 organisation and carries no heat spreader. It is not compatible with standard desktop computers or unbuffered memory configurations.

Thermals Noise and Power Draw

Running at the JEDEC-standard 1.2V, the module draws minimal power and generates low heat without a dedicated spreader. Passive cooling relies on chassis airflow, so a well-ventilated server enclosure keeps temperatures stable. No active cooling components are present, resulting in silent operation under normal workloads.

Bundled Accessories and Software Impact

The package contains only the memory module itself; no cables, brackets, or software utilities are included. Installation is a straightforward DIMM insertion that immediately adds 128GB of ECC-protected capacity. OWC's advanced replacement programme and limited lifetime warranty provide long-term support without altering system behaviour.

How it compares

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

Price $741.99
Pricier than about 76% 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 $5.80 per GB
Cheaper than about 66% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number3R2D44R4128G
Total capacity128 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.2 V

Questions about this item

How do I install the 288-Pin DDR4 RDIMM in a Supermicro server, and what step do people often skip?

Align the notch on the 288-Pin module with the slot key, press firmly until both side clips click, and verify the server BIOS recognises the full 128GB at 3200MHz; the step often skipped is confirming the memory mode is set to registered ECC in the firmware.

What maintenance or replacement will the 128GB 4Rx4 module need over its service life?

The module has no moving parts or heat spreader, so no scheduled maintenance is required; replacement is only needed if a memory test reports correctable ECC errors that exceed the platform threshold.

What limit appears first when the 1.2V CL22 RDIMM runs sustained workloads?

The 1.2V operating voltage and CL22 latency define the thermal and timing envelope; under continuous load the memory controller’s thermal throttle point is reached before the module’s own rating.

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