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Single green 288-pin DDR4 ECC LRDIMM module with black chips no heat spreader

OWC

OWC 64GB DDR4 2400 PC4-19200 CL17 4Rx4 288-pin 1.2V ECC LRDIMM memory upgrade

SKU CH-RW6W-3PFT6

64 GB DDR4 2400 ECC Load-Reduced DIMM for Cisco HX220c M4 and HX240c M4 servers

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

Capacity 64GB

  • 64GB capacity extends server memory headroom
  • DDR4 2400 CL17 speed matches system timing
  • ECC load-reduced design protects data integrity
  • 2V operation reduces power draw
  • Compatible with Cisco HX220c M4 and HX240c M4

Server Memory Upgrade

This 64GB DDR4 2400 ECC LRDIMM module is built for Cisco HX220c M4 and HX240c M4 servers. It delivers 64GB of registered load-reduced memory in a single 288-pin DIMM running at 1.2V. The CL17 latency and 4Rx4 organisation suit enterprise workloads that demand high capacity per slot. It replaces Cisco part number UCSML1X644RVA.

Replacing Lower-Capacity DIMMs

The upgrade is worthwhile when existing slots hold smaller LRDIMMs and the platform can address 4Rx4 ranks at PC4-19200 speed. Systems still running at 2133MHz will operate the module at the lower frequency without configuration changes. Mixing with unbuffered or standard registered ECC DIMMs is not supported, so all slots must use matching load-reduced modules.

DDR4 LRDIMM Constraints

The DDR4 interface caps transfer rate at 2400 MT/s and requires a server or workstation memory controller that understands load-reduced signalling. Desktop and consumer notebook platforms cannot use this module. Total system capacity is limited by the number of DIMM slots and the CPU memory controller rank limit, neither of which is specified here.

How it compares

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

Price $371.99
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 $5.81 per GB
Cheaper than about 67% 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 HX220c M4
Cisco HX240c M4

Other versions of this model

5 more in the same range

Questions about this item

Does the 288-pin DDR4 LRDIMM fit the Cisco HX220c M4 and HX240c M4 memory slots?

Yes, the 288-pin DDR4 2400 PC4-19200 CL17 4Rx4 1.2V ECC Load Reduced DIMM is listed as compatible with both Cisco HX220c M4 and HX240c M4 servers.

What is the correct installation step to avoid mixing memory types on these Cisco servers?

Install only ECC Load Reduced modules; do not mix with unbuffered or ECC registered DIMMs, as the system requires a uniform memory type.

When should the 64GB LRDIMM be replaced if ECC error counts rise on the Cisco HX240c M4?

Replace the module when the system logs show increasing correctable or uncorrectable ECC errors, indicating the 64GB DDR4 2400 CL17 4Rx4 DIMM is degrading.

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