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Two green 288-pin DDR4 RDIMM modules, no heat spreader, 32GB kit

OWC

OWC 32GB (2x16GB) DDR4 2133MHz CL15 ECC Registered RDIMM 1.2V 288-pin Server RAM

SKU CH-QQ9M-4KD5J

ECC registered DDR4 dual-channel kit delivers 32 GB at 2133 MHz CL15 for server and workstation upgrades

  • Capacity32GB (2 x 16GB)
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2133 (PC4 17000)
  • CAS LatencyCL15
  • Voltage1.2V
  • ECCYes

Capacity 32GB (2 x 16GB)

Rank 2Rx4

  • ECC registered design protects data integrity in servers
  • Dual-channel 32GB kit (2×16GB) maximises memory bandwidth
  • DDR4 2133MHz CL15 delivers responsive multitasking performance
  • Low 1.2V operation reduces server power consumption
  • 288-pin RDIMM form factor fits workstation and NAS systems

Server-grade ECC registered memory

This OWC kit supplies 32GB of DDR4 ECC registered RDIMM in a matched pair of 16GB modules. It is built for servers, workstations and NAS systems that require registered memory with error correction. The modules operate at 1.2V and conform to JEDEC PC4-17000 specifications. Standard desktop computers cannot use this memory.

Replaces non-ECC or unbuffered DIMMs

The upgrade is worthwhile when a system demands registered ECC modules and cannot accept unbuffered memory. Mixing registered and unbuffered DIMMs is not supported, so a full replacement is required. The dual-channel kit simplifies installation by providing two identical 16GB sticks. Older infrastructure gains extended service life with this compliant upgrade.

Sustained load stability with ECC

Error correction detects and corrects single-bit errors during continuous operation, reducing the risk of data corruption in long-running workloads. Registered buffering lowers electrical load on the memory controller, helping maintain signal integrity across all 288 pins. The CL15 latency at 2133MHz delivers consistent timing under prolonged use. No heat spreader is fitted, so airflow in the chassis manages module temperature.

Highlights

  • ECC registered design protects data integrity in servers
  • Dual-channel 32GB kit (2×16GB) maximises memory bandwidth
  • DDR4 2133MHz CL15 delivers responsive multitasking performance
  • Low 1.2V operation reduces server power consumption
  • 288-pin RDIMM form factor fits workstation and NAS systems

Specifications

BrandOWC
Part Number2R1D42R4032P
Capacity32GB (2 x 16GB)
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2133 (PC4 17000)
CAS LatencyCL15
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Multi-channel KitDual Channel Kit
Heat SpreaderNo

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Questions about this item

Will these 288-pin RDIMMs fit a standard desktop motherboard?

No. The modules are registered ECC DDR4 RDIMMs built for server and workstation platforms; they will not work in consumer desktop boards that require unbuffered memory.

What is the correct way to install the 2Rx4 dual-channel kit?

Insert both 16 GB modules into the same channel pair — usually slots of matching colour — so the memory controller can run them in dual-channel mode; installing them in mismatched slots is the common error.

Do the modules need active cooling or thermal-pad replacement over time?

The sticks ship without a heat spreader and run at 1.2 V; in a chassis with normal server airflow no extra cooling or pad maintenance is required.

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