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Eight green DDR5 RDIMM modules with black chips, no heat spreaders

OWC

OWC 512GB (8×64GB) DDR5 5600 CL46 ECC Registered RDIMM server RAM

SKU CH-0ESY-4WK97

Eight 64 GB DDR5 5600 CL46 ECC registered RDIMMs deliver 512 GB for compatible workstations and servers

  • Total capacity512 GB (8 × 64 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • CAS latencyCL46
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 512GB (8 x 64GB)

Show 4 more

Rank 2Rx4

  • 512 GB total capacity with eight 64 GB modules for large workloads
  • DDR5 5600 speed rated at PC5-44800 for high throughput
  • ECC registered design detects and corrects data errors in servers
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • 1 V operation reduces power draw in dense configurations

Server-grade DDR5 ECC registered kit

This kit supplies 512 GB of DDR5 memory across eight 64 GB registered DIMMs. It is built for workstations, NAS systems, servers and network switches that require ECC registered modules. Standard desktop platforms cannot use this memory.

Registered design with on-die ECC

Registered buffering reduces electrical load on the memory controller, allowing the full eight-module population. On-die ECC corrects single-bit errors inside each DRAM, improving data integrity for long-running workloads. The modules operate at 1.1 V and carry no heat spreaders.

512 GB total capacity at DDR5 5600 CL46

The 512 GB pool handles large virtualisation clusters, in-memory databases and heavy render queues with headroom to spare. Performance scales with the platform’s dual-channel architecture. Workloads that exceed 512 GB or need load-reduced DIMMs will require a different memory type.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $14,085.99
Pricier than about 92% of the 6,523 comparable items (median $188.99).
Total capacity 512 GB (8 × 64 GB)
Higher than about 91% of the 6,064 comparable items (median 32 GB).
Price per GB $27.51 per GB
Pricier than about 89% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number5R6D52R4512K
Total capacity512 GB (8 × 64 GB)
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Memory
CAS latencyCL46
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.1 V

Other versions of this model

5 more in the same range

Questions about this item

Will the eight 64 GB modules need any firmware updates or battery-backed components replaced during their service life?

The modules are standard JEDEC DDR5 ECC Registered RDIMMs with no onboard firmware or battery-backed parts, so no firmware updates or battery replacements are required.

What is the first limit reached when all eight sticks run at DDR5 5600 CL46 continuously?

The registered buffer and on-die ECC add latency, so the memory controller's maximum supported rank count per channel is typically reached before bandwidth or thermal limits.

How much heat and noise do the bare modules produce in a fully populated server running all day?

With no heat spreaders and a 1.1 V operating voltage, each 64 GB stick runs cool and silent; total system noise and heat depend on the chassis fans and airflow, not the modules themselves.

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