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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

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank1Rx4

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.

How it compares

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

Price $424.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $6.64 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 number2R4D41R4064S
Total capacity64 GB (4 × 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 B260 M4 E7 v4
Cisco UCS B460 M4 E7 v4

Other versions of this model

5 more in the same range

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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