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Green rectangular DDR4 memory module with black chips and gold edge connectors

OWC

OWC 32GB DDR4 2933 ECC Registered DIMM 2Rx4 memory upgrade

SKU CH-NZNX-8JQGG

A 32 GB DDR4 2933 ECC registered DIMM for Cisco HX220c M5, HX240c M5, HXAF220c M5, HX-E-220M5SX and C480 ML M5 servers

  • Capacity32GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 32GB

  • ECC registered design protects data integrity in servers
  • 32 GB DDR4 2933 MHz CL21 expands Cisco HX and C480 capacity
  • Single 2Rx4 288-pin module installs in validated Cisco systems
  • 2 V operation reduces power draw in dense racks
  • Backward compatible with 2133, 2400 and 2666 MHz platforms

32GB DDR4 2933 ECC RDIMM

This single 32GB DDR4 2933 PC4-23400 CL21 2Rx4 registered DIMM operates at 1.2V and is built for Cisco HX220c M5, HX240c M5, HXAF220c M5, HX-E-220M5SX and C480 ML M5 servers. It replaces Cisco part numbers HXMRX32G2RTH, HXSPM32G2RTH and UCSMRX32G2RTH. The module is not compatible with standard desktop computers or unbuffered memory configurations.

Sustained server workloads

ECC registered operation detects and corrects single-bit errors while the register buffers address and command signals to reduce electrical load on the memory controller. This stabilises throughput during continuous multi-threaded tasks such as virtualisation, database transactions and large-file processing. Backward compatibility with 2133MHz, 2400MHz and 2666MHz platforms allows deployment in mixed-speed environments without down-clocking the entire channel.

Pre-installation checklist

Verify the target system appears in the supported Cisco model list and that the motherboard accepts 288-pin DDR4 registered DIMMs with a 2Rx4 organisation. Do not mix this module with load-reduced or unbuffered memory; the registered design requires a matching memory topology. Confirm the chassis has an available DIMM slot and that the firmware revision recognises PC4-23400 speeds before ordering.

Highlights

  • ECC registered design protects data integrity in servers
  • 32 GB DDR4 2933 MHz CL21 expands Cisco HX and C480 capacity
  • Single 2Rx4 288-pin module installs in validated Cisco systems
  • 2 V operation reduces power draw in dense racks
  • Backward compatible with 2133, 2400 and 2666 MHz platforms

Specifications

BrandOWC
Part Number2R9D42R432GB
Capacity32GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemCisco HX220c M5
Cisco HX240c M5
Cisco HXAF220c M5
Cisco HX-E-220M5SX
Cisco C480 ML M5

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Questions about this item

Does the 1.2V DDR4 2933 module run hot or loud when the Cisco HX240c M5 is under constant load?

The module operates at 1.2V without a heat spreader, so it relies on the server's chassis airflow; it adds no moving parts and therefore no extra noise.

What must the Cisco HX220c M5 already have for this 32GB 2Rx4 registered DIMM to work?

The server needs free 288-pin DDR4 slots that support ECC registered memory and must not mix this module with unbuffered or load-reduced DIMMs.

Will this PC4-23400 CL21 stick downclock cleanly beside existing 2400MHz DIMMs in a C480 ML M5?

Yes, the specifications list backward compatibility with 2133MHz, 2400MHz and 2666MHz, so the module will run at the lower speed when paired with slower DIMMs.

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