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Two green DDR4 ECC registered DIMMs, no heat spreaders

OWC

OWC 32GB (2x16GB) DDR4 2400 CL17 ECC Registered RDIMM Cisco UCS B420 M4 C460 M4

SKU CH-NBHS-KT8W4

32 GB kit of two 16 GB DDR4 2400 CL17 ECC registered RDIMMs for Cisco UCS B420 M4 and C460 M4 servers

  • Capacity32GB (2 x 16GB)
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2400 (PC4 19200)
  • CAS LatencyCL17
  • Voltage1.2V
  • ECCYes

Capacity 32GB (2 x 16GB)

  • ECC registered design prevents data errors in critical workloads
  • 32GB dual-channel kit (2×16GB) expands server memory capacity
  • DDR4 2400 CL17 at 1.2V balances speed with low power draw
  • Validated for Cisco UCS B420 M4 and C460 M4 systems
  • 288-pin RDIMM form factor fits registered DIMM slots only

Server Memory Kit

This OWC kit provides 32 GB of DDR4 ECC Registered memory in a matched pair of 16 GB modules. It is built for Cisco UCS B420 M4 and C460 M4 servers that require 288-pin RDIMMs running at 2400 MT/s with CL17 latency. The modules operate at 1.2 V and use a 1Rx4 organisation. No heat spreaders are fitted.

Not for Desktops

The registered design and ECC function make this memory incompatible with standard desktop or consumer workstation boards that accept only unbuffered DIMMs. It also cannot be mixed with load-reduced ECC modules in the same system. Buyers who need memory for a regular PC or who plan to combine different ECC types should look elsewhere.

Registered ECC Decides Fit

The single specification that determines whether this kit works is the registered ECC RDIMM form factor required by the Cisco UCS B420 M4 and C460 M4 platforms. If your server manual calls for registered ECC DDR4 RDIMMs at 2400 MT/s, this kit matches that requirement. If it calls for unbuffered or load-reduced modules, it will not work.

Highlights

  • ECC registered design prevents data errors in critical workloads
  • 32GB dual-channel kit (2×16GB) expands server memory capacity
  • DDR4 2400 CL17 at 1.2V balances speed with low power draw
  • Validated for Cisco UCS B420 M4 and C460 M4 systems
  • 288-pin RDIMM form factor fits registered DIMM slots only

Specifications

BrandOWC
Part Number2R4D41R4032P
Capacity32GB (2 x 16GB)
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2400 (PC4 19200)
CAS LatencyCL17
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx4
Heat SpreaderNo
Compatible SystemCisco UCS B420 M4
Cisco UCS C460 M4 (DDR4)

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Questions about this item

How much power does each 16GB DDR4 2400 CL17 RDIMM draw at 1.2V during continuous server operation?

Each module operates at 1.2V, the standard DDR4 voltage for registered ECC DIMMs, keeping power draw low in Cisco UCS B420 M4 and C460 M4 chassis.

What server hardware must already be present to install this 288-pin ECC registered kit?

A Cisco UCS B420 M4 or C460 M4 (DDR4) system with available 288-pin RDIMM slots that support registered ECC memory.

Can these 1Rx4 registered DIMMs run alongside older unbuffered or load-reduced modules in the same Cisco UCS server?

No, registered ECC memory cannot be mixed with unbuffered or load-reduced modules; all slots must use matching registered ECC DIMMs.

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