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Four green circuit boards with gold edge connectors and black memory chips

OWC

OWC 128GB (4x32GB) DDR4 2933 ECC Registered RDIMM memory upgrade

SKU CH-8EPV-E0902

128 GB DDR4-2933 ECC registered RDIMM kit of four 32 GB modules for Cisco UCS M5 servers

  • Capacity128GB (4 x 32GB)
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 128GB (4 x 32GB)

Rodyti 2 daugiau konfigūracijų
  • 128 GB capacity across four 32 GB modules for high-density server memory
  • DDR4 2933 MHz CL21 speed with PC4-23400 bandwidth for responsive workloads
  • ECC registered 2Rx4 design detects and corrects data errors in critical systems
  • 2 V operation reduces power draw in compatible Cisco UCS platforms
  • Backward compatible with 2133, 2400 and 2666 MHz speeds for flexible deployment

System-specific DDR4 ECC RDIMM kit

This OWC kit provides 128 GB of DDR4 2933 ECC registered memory in four 32 GB modules. It is designed for Cisco UCS B200 M5, B480 M5, C220 M5, C240 M5 and C480 M5 servers. The modules are not compatible with standard desktop computers. They also cannot be mixed with unbuffered or load-reduced ECC memory.

Registered 288-pin modules without heat spreaders

Each module uses a 288-pin registered DIMM form factor with 2Rx4 organisation and operates at 1.2 V. The lack of heat spreaders keeps the profile low for dense server chassis. Registered buffering helps maintain signal integrity when all four slots are populated. Backward compatibility with 2133, 2400 and 2666 MHz systems allows the kit to run at lower speeds if the platform requires it.

Verify Cisco UCS model and memory population rules

Confirm your server is one of the listed Cisco UCS M5 models before ordering. Check the platform documentation for maximum supported capacity per socket and the required DIMM population order. Ensure the system does not already contain unbuffered or load-reduced ECC modules, as mixing memory types is not supported.

Privalumai

  • 128 GB capacity across four 32 GB modules for high-density server memory
  • DDR4 2933 MHz CL21 speed with PC4-23400 bandwidth for responsive workloads
  • ECC registered 2Rx4 design detects and corrects data errors in critical systems
  • 2 V operation reduces power draw in compatible Cisco UCS platforms
  • Backward compatible with 2133, 2400 and 2666 MHz speeds for flexible deployment

Specifikacijos

BrandOWC
Part Number2R9D42R4128S
Capacity128GB (4 x 32GB)
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemCisco UCS B200 M5
Cisco UCS B480 M5
Cisco UCS C220 M5
Cisco UCS C240 M5
Cisco UCS C480 M5

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Does the DDR4 2933 (PC4-23400) speed cap at a lower rate if the server only supports 2666 MHz?

Yes, the modules are backward compatible and will run at 2133, 2400 or 2666 MHz when the platform requires it.

Will the 288-pin registered DIMMs fit the memory slots in a Cisco UCS C220 M5?

Yes, the 288-pin RDIMM form factor matches the DIMM slots on the listed Cisco UCS B200 M5, B480 M5, C220 M5, C240 M5 and C480 M5 servers.

Do I need to populate all four modules at once, or can I add them one at a time?

Install modules in matched pairs per CPU channel following the server's population guide; mixing registered ECC with unbuffered or load-reduced DIMMs is not supported.

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