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Two green DDR5 RDIMM sticks with gold contacts, no heat spreaders

OWC

OWC 64GB (2x32GB) DDR5 5200 CL42 ECC Registered RDIMM server RAM

SKU CH-J6V0-TDQJM

Dual-channel 64GB DDR5 ECC registered RDIMM kit runs at 5200 MT/s with CL42 latency and 1.1V operation

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 5200 (PC5 41600)
  • CAS latencyCL42
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx8

Capacity 64GB (2 x 32GB)

Show 4 more

Rank 2Rx8

  • ECC registered design protects data integrity in servers
  • Dual-channel 64 GB kit delivers high capacity for virtualization
  • JEDEC-standard DDR5 5200 operation ensures broad platform compatibility
  • Low 1.1 V voltage reduces power draw in dense configurations
  • 2Rx8 registered modules support heavy multi-threaded workloads

ECC Registered DDR5 for Workstations

This kit provides 64 GB of DDR5 5200 memory in two 32 GB registered DIMMs. It is built for workstations, servers, NAS systems and network switches that require ECC error correction and registered buffering. Standard desktop computers cannot use this memory.

Upgrading from lower-capacity DDR5 RDIMMs

Replacing smaller registered modules with this 2Rx8 dual-channel kit doubles the memory per slot. The jump is worth it when workloads need more simultaneous threads or larger datasets than the current capacity allows.

Build integration with 288-pin DDR5 platforms

Each module runs at 1.1 V and conforms to JEDEC PC5-41600 CL42 specifications. The registered design reduces electrical load on the memory controller, freeing headroom for additional DIMM slots on qualified server and workstation motherboards.

How it compares

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

Price $1,821.99
Pricier than about 85% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $28.47 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number5R2D52R8064P
Total capacity64 GB (2 × 32 GB)
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 5200 (PC5 41600)
Memory
CAS latencyCL42
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
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

Does the 288-pin RDIMM fit a standard DDR5 server DIMM slot?

Yes, the kit uses the 288-pin DDR5 RDIMM form factor that matches JEDEC-standard server DIMM sockets.

What is the correct order for populating the two 32 GB modules in a dual-channel server?

Install one module in each channel — typically the first slot of channel A and the first slot of channel B — so the memory controller sees a matched 2Rx8 pair at 5200 MT/s.

Will the 1.1 V DDR5 modules need active cooling or replacement after heavy server use?

The modules have no heat spreader and run at the JEDEC 1.1 V nominal voltage; adequate chassis airflow is sufficient and no scheduled replacement is required.

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