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Two green 288-pin DDR4 RDIMM modules, 32GB total, no heat spreaders

OWC

OWC 32GB (2x16GB) DDR4 2666MHz CL19 ECC Registered RDIMM 1.2V 288-pin Server RAM

SKU CH-18F7-ZF876

Dual-channel 32 GB DDR4 ECC registered RDIMM kit running at 2666 MHz CL19 for servers and workstations

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 32GB (2 x 16GB)

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Rank 2Rx4

  • ECC registered design protects data integrity in servers and workstations
  • Dual-channel 32GB kit (2 x 16GB) scales memory capacity for heavy workloads
  • DDR4 2666MHz CL19 at 1.2V delivers standard server speed with low power draw
  • 288-pin RDIMM form factor fits compatible server, workstation and NAS platforms
  • Backward compatible with 2133MHz and 2400MHz systems for flexible deployment

Server-grade ECC memory kit

This OWC kit provides 32GB of DDR4 ECC registered memory in a dual-channel pair of 16GB modules. It is built for servers, workstations and NAS systems that require error correction and registered signalling. The modules will not work in standard desktop computers or alongside unbuffered memory.

288-pin RDIMM form factor

Each module uses the 288-pin registered DIMM layout with a 2Rx4 organisation and operates at 1.2V. The registered design places a buffer on the command bus to reduce electrical load on the memory controller. No heat spreader is fitted, so airflow in the chassis handles cooling directly.

JEDEC 2666MHz at CL19

Rated for PC4-21300 speeds with a CAS latency of 19, the kit also runs at 2400MHz and 2133MHz where the platform demands it. Standard 1.2V operation keeps power draw within normal DDR4 limits for registered server memory.

How it compares

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

Price $217.99
Typical for this category: the median of 6,523 items is $188.99.
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 6,064 items is 32 GB.
Price per GB $6.81 per GB
Cheaper than about 55% 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 number2R6D42R4032P
Total capacity32 GB (2 × 16 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
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

What speed does the DDR4 2666 PC4-21300 interface actually run at in a server?

The modules operate at 2666 MHz with CL19 latency and will also run at 2400 MHz or 2133 MHz if the platform requires a lower speed.

What physical slot and form factor do these 288-pin RDIMMs need?

They require a 288-pin DDR4 RDIMM socket on a server, workstation or NAS motherboard; they will not fit desktop UDIMM slots.

How do I install the dual-channel 2x16GB kit and what step is often missed?

Populate the two modules in the correct channel pair — usually slots of the same colour — and ensure the registered ECC type matches the system requirement; mixing with unbuffered memory will prevent boot.

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