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Green circuit board with gold contacts and black memory chips, no heat spreader

OWC

OWC 16GB DDR4 2933 CL21 1Rx4 288-pin 1.2V ECC Registered RDIMM 2R9D41R416GB

SKU CH-N4JT-4DF1X

16 GB DDR4 ECC registered RDIMM running at 2933 MHz CL21 for Cisco HX and C480 M5 servers

  • Capacity16GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 16GB

  • ECC registered design prevents data corruption in critical workloads
  • 16GB single module expands capacity without occupying extra slots
  • 2933MHz DDR4 speed with CL21 latency supports responsive server performance
  • 2V operation reduces power draw in dense configurations
  • Validated for Cisco HX220c M5, HX240c M5, HXAF220c M5, HX-E-220M5SX, C480 ML M5

Server-grade ECC RDIMM for Cisco HX and C480 M5

This 16GB DDR4 2933 CL21 1Rx4 registered DIMM operates at 1.2V and is validated for Cisco HX220c M5, HX240c M5, HXAF220c M5, HX-E-220M5SX and C480 ML M5 servers. It replaces Cisco part numbers HXMRX16G1RTH and UCSMRX16G1RTH. The module is built for workstation and server platforms that require ECC registered memory and will not function in standard desktop systems or alongside unbuffered or load-reduced modules.

Steady-state reliability under continuous server

ECC registered operation corrects single-bit errors and reduces electrical load on the memory controller, maintaining data integrity during sustained compute, virtualization or storage tasks. The module runs at the native 2933 MT/s speed with CL21 timing and remains stable when the system down-clocks to 2666, 2400 or 2133 MT/s to match existing populated slots. JEDEC and RoHS compliance ensures consistent electrical behaviour across the full operating envelope.

Direct replacement for Cisco HXMRX16G1RTH

Install this module to expand capacity in supported Cisco M5 servers without mixing registered and unbuffered or load-reduced DIMMs. The upgrade is worthwhile when the platform demands ECC registered memory and the current configuration leaves DIMM slots available for a 16GB 1Rx4 module. Buyers who need unbuffered ECC, load-reduced DIMMs or desktop-compatible memory cannot use this part.

Pontos fortes

  • ECC registered design prevents data corruption in critical workloads
  • 16GB single module expands capacity without occupying extra slots
  • 2933MHz DDR4 speed with CL21 latency supports responsive server performance
  • 2V operation reduces power draw in dense configurations
  • Validated for Cisco HX220c M5, HX240c M5, HXAF220c M5, HX-E-220M5SX, C480 ML M5

Especificações

BrandOWC
Part Number2R9D41R416GB
Capacity16GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx4
Heat SpreaderNo
Compatible SystemCisco HX220c M5
Cisco HX240c M5
Cisco HXAF220c M5
Cisco HX-E-220M5SX
Cisco C480 ML M5

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Perguntas sobre este artigo

How much power does the 1.2V ECC Registered RDIMM draw under continuous server load?

The module operates at the standard DDR4 1.2 V. Registered DIMMs add a small register overhead, so sustained draw is slightly higher than an unbuffered stick, but it stays within the JEDEC 1.2 V envelope for 2933 MT/s operation.

What motherboard features must my Cisco server already have to accept this 288-pin DDR4 2933 RDIMM?

The board must provide DDR4 RDIMM slots with ECC and registered-buffer support. Cisco HX220c M5, HX240c M5, HXAF220c M5, HX-E-220M5SX and C480 ML M5 platforms meet this requirement.

Will this 2933 CL21 1Rx4 module run reliably alongside existing 2666 or 2400 MHz ECC Registered DIMMs in the same Cisco server?

Yes. The spec lists backward compatibility with 2133, 2400 and 2666 MT/s. All populated slots will run at the lowest common speed and the loosest CAS latency present.

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