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Green 288-pin DDR4 RDIMM module with black chips no heat spreader

OWC

OWC 16GB DDR4 2133MHz ECC Registered RDIMM 2Rx4 1.2V server RAM

SKU CH-FHYF-0KKQR

16 GB DDR4 ECC registered RDIMM running at 2133 MHz with CL15 latency and 1.2 V operation for servers and workstations

  • Total capacity16 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4
  • ECC protection guards data integrity in critical workloads
  • Registered design stabilises signal for dense server configurations
  • DDR4 2133 MHz speed matches PC4-17000 system requirements
  • 16 GB capacity doubles typical DIMM density for virtualization
  • 2 V operation lowers power draw and heat output

Server ECC RDIMM upgrade

This OWC 16GB DDR4 2133MHz PC4-17000 ECC Registered RDIMM is built for servers, workstations and NAS systems that require registered memory. It uses a 288-pin 2Rx4 layout with CL15 latency and operates at 1.2V. The module is not compatible with standard desktop computers or unbuffered memory configurations.

Thermals and power draw

Without a heat spreader the module relies on chassis airflow for cooling during normal operation. Registered buffering and ECC circuitry add minimal overhead to the 1.2V supply, keeping power draw low in typical server workloads. JEDEC and RoHS compliance confirm standard thermal envelopes for this density.

Sustained load behaviour

Under continuous load the registered design maintains signal integrity across ranks while ECC corrects single-bit errors without halting the system. CL15 timing and 2133MHz speed deliver consistent throughput for multi-threaded server tasks. The 16GB capacity supports extended uptime in memory-intensive applications.

How it compares

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

Price $102.99
Cheaper than about 68% of the 6,523 comparable items (median $188.99).
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $6.44 per GB
Cheaper than about 59% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number2R1D42R416 GB
Total capacity16 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2133 (PC4 17000)
Memory
CAS latencyCL15
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V

Questions about this item

How do I install this 288-Pin DDR4 RDIMM, and what step is often missed?

Power down the server, open the chassis, align the module notch with the slot key, press firmly until both retention clips click, then verify in BIOS that the 16GB ECC Registered module is detected at 2133MHz CL15.

What maintenance or replacement will this 1.2V ECC Registered DIMM need later?

No routine maintenance is required; the module has no heat spreader and operates at standard JEDEC voltage, so replacement is only necessary if a memory error occurs or capacity must be increased.

What limit appears first when this 2Rx4 PC4-17000 RDIMM runs under sustained load?

The registered buffer and ECC logic add one cycle of latency, so the CL15 timing at 2133MHz becomes the primary bottleneck before thermal or voltage limits are reached.

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