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Green rectangular DDR4 RDIMM circuit board with black memory chips and gold edge connectors

OWC

OWC 32GB DDR4 2933MHz ECC Registered RDIMM CL21 1.2V 2Rx4 288-Pin server RAM

SKU CH-HZEH-KBJ8H

32GB DDR4 2933MHz ECC registered RDIMM for servers, workstations and NAS systems

  • Capacity32GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes
  • ECC protection prevents data errors in critical workloads
  • Registered design stabilises signal integrity for dense server configurations
  • 32GB capacity expands memory headroom for virtualisation tasks
  • 2933MHz speed with CL21 latency delivers responsive throughput
  • Backward compatible with 2133, 2400 and 2666MHz systems

Server ECC Registered DDR4 Memory

This 32GB DDR4 2933MHz module is built for servers, workstations and NAS systems that require ECC registered memory. It operates at 1.2V with CL21 latency and a 2Rx4 rank configuration. The 288-pin RDIMM will not work in standard desktop computers and cannot be mixed with unbuffered modules.

Installing ECC RDIMM Modules

Installation follows the standard DIMM slot procedure for the target platform. The registered buffer adds a clock cycle, so the memory controller must support registered DIMMs. A common error is attempting to use this module in a consumer motherboard that only accepts unbuffered memory. Another issue is mixing registered and unbuffered DIMMs in the same system.

DDR4 2933MHz Speed Limits

The module runs at PC4-23400 2933MHz and is backward compatible with 2133MHz, 2400MHz and 2666MHz bus speeds. When installed in a slower system, it will downclock to the highest supported frequency. Maximum throughput is limited by the DDR4 interface and the memory controller capabilities of the host platform.

Highlights

  • ECC protection prevents data errors in critical workloads
  • Registered design stabilises signal integrity for dense server configurations
  • 32GB capacity expands memory headroom for virtualisation tasks
  • 2933MHz speed with CL21 latency delivers responsive throughput
  • Backward compatible with 2133, 2400 and 2666MHz systems

Specifications

BrandOWC
Part Number2R9D42R432GB
Capacity32GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo

Questions about this item

How do I verify the 32GB DDR4 2933MHz ECC RDIMM is running at PC4-23400 CL21 1.2V after installation?

Enter the server BIOS or UEFI and confirm the memory speed reads 2933MHz, CAS latency shows CL21, voltage is set to 1.2V, and ECC Registered status is active for the 32GB module.

What comes in the box with the OWC 32GB DDR4 2933MHz ECC RDIMM and what must I source separately?

The box contains the single 32GB 288-pin 2Rx4 ECC Registered RDIMM; no heat spreader, cables, tools, or additional DIMMs are included.

Which OWC DDR4 ECC Registered RDIMM capacity should I choose for a server upgrade?

Select the 32GB 2Rx4 module at 2933MHz CL21 1.2V to match the Samsung M393A4K40CB2-CVF and M393A4K40DB2-CVF specifications exactly.

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