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Green rectangular circuit board with gold edge contacts and black memory chips on both sides

OWC

OWC 16GB DDR4 2933MHz PC4-23400 ECC Registered RDIMM 288-Pin 2Rx8 1.2V Server RAM

SKU CH-QRWM-F36D8

16 GB DDR4 2933 MHz ECC registered RDIMM for servers, workstations and NAS, CL21, 1.2 V, backward compatible with 2133, 2400 and 2666 MHz

  • Total capacity16 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx8
  • ECC protection prevents data corruption in critical workloads
  • Registered design stabilises signal integrity for dense server configs
  • 2933 MHz speed with CL21 latency boosts throughput
  • 2 V operation lowers power draw per module
  • Backward compatible with 2133, 2400 and 2666 MHz systems

16GB DDR4 2933MHz ECC Registered RDIMM

This 16GB DDR4 2933MHz PC4-23400 module is an ECC Registered RDIMM built for servers, workstations and NAS systems. It runs at 1.2V with CL21 latency and a 2Rx8 rank configuration. The 288-pin design matches Samsung part numbers M393A2K43CB2-CVF and M393A2K43DB2-CVF.

Compatibility check before ordering

Verify that your platform requires ECC Registered memory and supports DDR4 2933MHz, 2666MHz, 2400MHz or 2133MHz operation. This module will not work in standard desktop computers that use unbuffered non-ECC DIMMs. It also cannot be mixed with unbuffered memory in the same system.

Sustained load behaviour

ECC error correction and registered signalling maintain data integrity during continuous operation in multi-socket servers and storage appliances. JEDEC-standard compliance and 1.2V operation keep thermals steady without a heat spreader. The module is tested to meet OEM specifications for long-term deployment.

How it compares

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

Price $110.99
Cheaper than about 65% 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 $6.94 per GB
Typical for this category: the median of 6,064 items is $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 number2R9D42R816 GB
Total capacity16 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V

Questions about this item

Does the module ship alone or with any accessories?

The OWC DDR4 2933 MHz ECC Registered RDIMM is supplied as a single 16 GB module. No cables, brackets or additional parts are included.

How do I know this 288-pin CL21 stick is the right capacity and speed for my server?

Match your system's requirements to the 16 GB capacity, DDR4 2933 MT/s (PC4-23400) speed, CL21 latency, 1.2 V voltage and 2Rx8 registered ECC configuration.

What happens if my board only runs memory at 2400 MHz?

The module is backward compatible with 2133, 2400 and 2666 MHz platforms and will operate at the highest speed the memory controller supports.

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