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Green circuit board with black memory chips, gold edge connector, no heat spreader

OWC

OWC 64GB DDR4 2400 CL17 4Rx4 288-pin 1.2V ECC Load Reduced LRDIMM memory upgrade

SKU CH-YWVM-FX8FN

A 64GB DDR4 2400 CL17 ECC load-reduced DIMM for Cisco UCS B420 M4 and C460 M4 servers

  • Total capacity64 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Memory rank4Rx4

Capacity 64GB

  • ECC error correction protects data integrity in critical workloads
  • 64GB single-module capacity maximises server memory density per slot
  • DDR4 2400 speed with CL17 latency balances throughput and responsiveness
  • Load-reduced 4Rx4 design reduces electrical load for stable high-capacity configs
  • 2V operation lowers power draw versus higher-voltage DDR4 modules

Cisco UCS server upgrade

This 64GB DDR4 LRDIMM is built for Cisco UCS B420 M4 and C460 M4 systems that require ECC load-reduced memory. It delivers 2400MHz speed with CL17 latency at 1.2V for enterprise workloads.

288-pin load-reduced design

The module uses a 4Rx4 organisation and operates without a heat spreader, relying on server chassis airflow. Load-reduced buffering reduces electrical load on the memory controller, allowing higher capacities per channel in compatible Cisco platforms.

Single-module 64GB capacity

One DIMM provides the full 64GB upgrade, simplifying installation and leaving additional slots free for future expansion. Backward compatibility with 2133MHz systems lets the module run in older DDR4 Cisco configurations without changes.

How it compares

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

Price $349.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $5.47 per GB
Cheaper than about 70% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2L4D44R464 GB
Total capacity64 GB
Product type288-Pin DDR4 ECC LRDIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportYes
Buffer typeLoad Reduced
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsCisco UCS B420 M4
Cisco UCS C460 M4 (DDR4)

Other versions of this model

5 more in the same range

Questions about this item

Does the DDR4 2400 PC4-19200 interface limit speed to 2400 MT/s in practice?

Yes, the module runs at DDR4 2400 (PC4-19200) with CL17 latency; it is also backward compatible with 2133 MHz systems.

What physical slot and clearance does the 288-pin LRDIMM require?

It needs a standard 288-pin DDR4 DIMM slot; the module has no heat spreader, so it fits in tight server chassis without extra height clearance.

How is the ECC Load Reduced DIMM installed, and what mixing mistake should be avoided?

Insert the 4Rx4 LRDIMM into a compatible Cisco UCS B420 M4 or C460 M4 slot; do not mix it with unbuffered or standard ECC registered memory.

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