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Four green DDR4 ECC RDIMM sticks in static bags

OWC

OWC 64GB (4x16GB) DDR4 2400 CL17 ECC RDIMM memory upgrade

SKU CH-FM78-B1CZH

64 GB kit of four 16 GB DDR4-2400 CL17 ECC registered DIMMs for Cisco UCS B260 M4 and B460 M4 servers

  • Capacity64GB (4 x 16GB)
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2400 (PC4 19200)
  • CAS LatencyCL17
  • Voltage1.2V
  • ECCYes

Capacity 64GB (4 x 16GB)

  • 64 GB kit (4 × 16 GB) expands server capacity
  • DDR4 2400 CL17 registered ECC protects data integrity
  • 2 V operation reduces power draw per module
  • 288-pin RDIMM fits Cisco UCS B260 M4 and B460 M4
  • Replaces Cisco part numbers UCSMR1X161RVA and UCSMR1X161RVG

Cisco UCS Server Upgrade

This 64GB kit contains four 16GB DDR4 ECC registered DIMMs built for Cisco UCS B260 M4 E7 v4 and B460 M4 E7 v4 servers. The modules run at 2400 MT/s with CL17 latency at 1.2V. They are designed to extend the service life of existing infrastructure or to populate new builds with validated memory.

Not for Desktop or Mixed Configurations

This memory will not work in standard desktop computers or consumer motherboards. It cannot be mixed with unbuffered or load-reduced ECC modules. Buyers who need non-ECC memory for a workstation or who require a different registered rank configuration should look at other parts.

Registered ECC DDR4 at 2400 MT/s

The decisive specification is the registered ECC DDR4 2400 CL17 1Rx4 288-pin form factor. Only systems qualified for this exact registered ECC profile will accept the kit. Verify the server model against the Cisco part numbers UCSMR1X161RVA and UCSMR1X161RVG before ordering.

Highlights

  • 64 GB kit (4 × 16 GB) expands server capacity
  • DDR4 2400 CL17 registered ECC protects data integrity
  • 2 V operation reduces power draw per module
  • 288-pin RDIMM fits Cisco UCS B260 M4 and B460 M4
  • Replaces Cisco part numbers UCSMR1X161RVA and UCSMR1X161RVG

Specifications

BrandOWC
Part Number2R4D41R4064S
Capacity64GB (4 x 16GB)
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2400 (PC4 19200)
CAS LatencyCL17
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx4
Heat SpreaderNo
Compatible SystemCisco UCS B260 M4 E7 v4
Cisco UCS B460 M4 E7 v4

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How does the CL17 latency affect sustained throughput on this DDR4-2400 kit?

The modules operate at DDR4-2400 with CL17 timing, delivering PC4-19200 bandwidth per DIMM under continuous server workloads.

What thermal or acoustic impact should I expect when all four RDIMMs run 24/7 in a Cisco UCS chassis?

These 1.2 V registered DIMMs have no heat spreaders and rely on the server's forced-air cooling; they add minimal heat and zero noise of their own.

Which existing Cisco UCS models must I already own for this 4×16 GB kit to be a direct upgrade?

The kit is validated for Cisco UCS B260 M4 E7 v4 and B460 M4 E7 v4 blade servers and replaces Cisco part numbers UCSMR1X161RVA and UCSMR1X161RVG.

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