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Two green DDR4 ECC registered RDIMM sticks, 288-pin, no heat spreaders

OWC

OWC 32GB (2x16GB) DDR4 2933MHz CL21 ECC Registered RDIMM 1.2V 288-pin Server RAM

SKU CH-D9V0-YFM99

32GB dual-channel DDR4-2933 ECC registered RDIMM kit (2×16GB, CL21, 1.2V) for servers, workstations and NAS

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 32GB (2 x 16GB)

Show 4 more

Rank 2Rx4

  • ECC registered design protects data integrity in servers
  • 32 GB dual-channel kit expands memory capacity
  • 2933 MHz DDR4 speed with CL21 latency
  • 2 V operation reduces power draw
  • Backward compatible with 2133, 2400 and 2666 MHz systems

Server memory kit

This 32GB kit contains two 16GB DDR4 2933MHz modules built to PC4-23400 CL21 specifications. They are ECC registered RDIMMs intended for server, workstation and NAS platforms that require registered memory. The kit is not compatible with standard desktop computers or unbuffered memory configurations.

Low voltage operation

Each module runs at 1.2V and conforms to JEDEC standard specifications for DDR4 registered DIMMs. The registered buffer reduces electrical load on the memory controller, supporting stable operation in multi-module server environments. No heat spreader is fitted on these modules.

Backward speed support

The memory is also compatible with 2133MHz, 2400MHz and 2666MHz systems, allowing deployment in older platforms without replacing the entire memory population. The dual-channel kit simplifies matched-pair installation for supported server and workstation boards.

How it compares

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

Price $219.99
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 $6.87 per GB
Cheaper than about 54% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number2R9D42R4032P
Total capacity32 GB (2 × 16 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
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

How do I install the 288-pin DDR4 ECC RDIMM modules and what step is often missed?

Align the notch on each 16 GB module with the slot key, press firmly until the retention clips click, then verify in BIOS that both channels show 2933 MHz CL21 at 1.2 V.

What maintenance or replacement will the 2Rx4 registered DIMMs need over time?

No routine maintenance is required; if a module fails the limited lifetime warranty covers replacement with an identical 16 GB 2Rx4 part.

What limit appears first when the dual-channel kit runs sustained workloads?

The CL21 latency at 2933 MHz and 1.2 V sets the throughput ceiling before thermal throttling becomes a factor.

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