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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

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank1Rx4

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.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $209.99
Cheaper than about 58% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $6.56 per GB
Cheaper than about 60% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2R4D41R4032P
Total capacity32 GB (2 × 16 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsCisco UCS B420 M4
Cisco UCS C460 M4 (DDR4)

Other versions of this model

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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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