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Green bare circuit board with black memory chips and gold edge contacts

OWC

OWC 64GB DDR5 5600 ECC Registered RDIMM 2Rx4 CL46 1.1V HP Alletra 4110 4120

SKU CH-90K0-RG79Z

A single 64 GB DDR5 5600 ECC registered RDIMM for HP Alletra 4110 and 4120 servers

  • Total capacity64 GB
  • Rated speedDDR5 5600 (PC5 44800)
  • CAS latency46
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB

  • 64GB single module expands server capacity
  • DDR5 5600 speed handles demanding workloads
  • ECC registered design protects data integrity
  • 1V operation reduces power draw
  • Validated for HP Alletra 4110 and 4120

Single-module capacity

This OWC module provides 64GB of DDR5 ECC Registered memory in a single 288-pin RDIMM. It is built for HP Alletra 4110 and 4120 storage servers that require registered, error-correcting DIMMs. Standard desktop or unbuffered workstation boards will not accept this module. Buyers needing non-ECC or load-reduced memory cannot use this part.

Registered ECC with 2Rx4 organisation

The decisive specification is the registered ECC design with a 2Rx4 rank layout running at DDR5 5600 (PC5-44800) with CL46 latency at 1.1V. This combination ensures signal integrity and error correction for the Alletra 4110 and 4120 memory controllers. Mixing with unbuffered or load-reduced DIMMs is not supported.

Slot population for Alletra 4110 and 4120

Each module occupies one 288-pin DDR5 RDIMM slot in the server chassis. Adding this 64GB DIMM increases total capacity without requiring a matched pair, freeing remaining slots for further expansion. The module operates at the standard 1.1V DDR5 voltage, so no special power provisioning is needed beyond the server's existing memory subsystem.

How it compares

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

Price $1,904.99
Pricier than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
CAS latency 46
Higher than about 90% of the 483 comparable items (median 22).
Price per GB $29.77 per GB
Pricier than about 85% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number5R6D52R464 GB
Total capacity64 GB
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Memory
CAS latency46
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsHP Alletra 4110
HP Alletra 4120

Other versions of this model

5 more in the same range

Questions about this item

What does the 5600 speed rating mean once this module is installed in an HP Alletra 4110 or 4120?

The module runs at DDR5 5600 MT/s (PC5-44800) with CL46 latency, delivering JEDEC-standard bandwidth and error correction for the Alletra 4110 and 4120 server platforms.

How does the registered ECC interface affect compatibility with the HP Alletra 4110 and 4120?

This is a 288-pin DDR5 ECC registered RDIMM (2Rx4) designed specifically for the Alletra 4110 and 4120; it cannot be mixed with unbuffered or load-reduced DIMMs.

What physical slot and form factor does this 64 GB module require in the Alletra 4110 or 4120?

It fits a standard 288-pin DDR5 RDIMM slot with no heat spreader, occupying one DIMM socket in the HP Alletra 4110 or 4120 chassis.

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