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Green rectangular circuit board with gold edge contacts and black memory chips, no heat spreader

OWC

OWC 64GB DDR4 2933 PC4-23400 CL21 2Rx4 288-pin 1.2V ECC RDIMM memory upgrade

SKU CH-TS8X-VD44R

64GB DDR4 2933 ECC registered RDIMM for Cisco HX220c M5, HX240c M5, HXAF220c M5, HX-E-220M5SX and C480 ML M5 servers

  • Total capacity64 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB

  • 64GB capacity expands server memory for demanding workloads
  • DDR4 2933 speed with CL21 latency delivers responsive data access
  • ECC registered design protects data integrity in critical applications
  • 2V operation reduces power draw and heat output
  • Compatible with Cisco HX220c M5, HX240c M5, HXAF220c M5, HX-E-220M5SX, C480 ML M5

64GB ECC RDIMM for Cisco M5 servers

This single 64GB DDR4 2933 module delivers registered ECC memory for Cisco HX220c M5, HX240c M5, HXAF220c M5, HX-E-220M5SX and C480 ML M5 systems. It targets IT teams maintaining or expanding these specific server platforms where data integrity and registered buffering are required.

Sustained operation at 2933MHz with CL21 latency

The module runs at a steady 1.2V and is validated for continuous server workloads rather than short bursts. Backward compatibility with 2133MHz, 2400MHz and 2666MHz buses lets it slot into existing configurations without forcing a full memory refresh across every slot.

Verify registered ECC requirement

This RDIMM will not work in standard desktop boards or in systems that only accept unbuffered or load-reduced ECC memory. Confirm your Cisco model appears in the supported list and that a free 288-pin DDR4 slot is available before ordering.

How it compares

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

Price $352.99
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 $5.52 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 number2R9D42R464 GB
Total capacity64 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsCisco HX220c M5
Cisco HX240c M5
Cisco HXAF220c M5
Cisco HX-E-220M5SX
Cisco C480 ML M5

Other versions of this model

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Questions about this item

How much power does this 1.2V DDR4 ECC RDIMM draw under continuous server load?

The module runs at 1.2 volts, the standard DDR4 voltage, which keeps power draw low during all-day operation in Cisco HX220c M5, HX240c M5, HXAF220c M5, HX-E-220M5SX or C480 ML M5 servers.

What must my system already have to accept this 288-pin registered ECC DIMM?

A server or workstation motherboard with DDR4 RDIMM slots that supports 2Rx4 registered ECC memory — such as the listed Cisco HX and C480 M5 platforms — and an available 288-pin DIMM socket.

Will this 2933 MHz CL21 module run stably alongside existing 2666 MHz DDR4 RDIMMs in my Cisco server?

Yes, the spec sheet confirms backward compatibility with 2133, 2400 and 2666 MHz speeds, so the module will downclock to match the slowest installed DIMM while maintaining ECC registered operation.

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