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Two green 288-pin DDR5 RDIMM modules, no heat spreaders, 64GB kit

OWC

OWC 64GB (2x32GB) DDR5 5600 CL46 ECC Registered RDIMM server RAM

SKU CH-EVPY-XBPDR

Dual-channel kit of two 32 GB DDR5 5600 CL46 ECC registered RDIMMs at 1.1 V for servers

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • CAS latencyCL46
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx8

Capacity 64GB (2 x 32GB)

Show 4 more

Rank 2Rx8

  • 64 GB dual-channel kit expands server memory capacity
  • DDR5 5600 speed delivers high data-transfer rates for demanding workloads
  • ECC registered design detects and corrects errors to protect data integrity
  • CL46 latency at 1.1 V balances responsive timing with efficient power use
  • JEDEC-compliant modules ensure broad workstation and server compatibility

64 GB DDR5 ECC RDIMM kit

This 64 GB kit contains two 32 GB DDR5 5600 CL46 registered DIMMs built for select workstations and servers. The modules operate at 1.1 V and use a 288-pin form factor with 2Rx8 organisation. They are intended for systems that require ECC registered memory and will not work in standard desktop computers.

Sustained-load behaviour

Registered buffering and on-die ECC keep data integrity intact during continuous workloads such as virtualisation, database serving or long render jobs. JEDEC-standard timings at 5600 MT/s deliver stable throughput without relying on overclocking headroom. The dual-channel kit layout lets the memory controller interleave traffic across both modules for consistent bandwidth.

Compatibility checklist

Verify that your platform supports DDR5 registered ECC RDIMMs and accepts 2Rx8 modules at the rated speed. Confirm the motherboard or server manual lists qualified 32 GB registered DIMMs and that no unbuffered or load-reduced memory is already installed. Mixing registered with unbuffered or load-reduced types is not supported.

How it compares

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

Price $1,538.99
Pricier than about 84% 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 $24.05 per GB
Pricier than about 85% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number5R6D52R8064P
Total capacity64 GB (2 × 32 GB)
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Memory
CAS latencyCL46
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.1 V

Other versions of this model

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Questions about this item

Does the 1.1V DDR5 5600 kit run hot or need extra cooling when the server runs all day?

The modules operate at the standard DDR5 voltage of 1.1V and have no heat spreader, so they rely on normal chassis airflow; in a properly ventilated server they stay within JEDEC thermal limits without extra cooling.

What must my motherboard provide to use these 288-pin registered ECC DIMMs?

The board needs DDR5 RDIMM slots that support ECC registered memory at 5600 MT/s, a chipset or CPU memory controller qualified for 2Rx8 registered modules, and a BIOS that enables ECC; standard desktop boards that only take unbuffered DIMMs will not work.

Can I add this 64GB dual-channel kit alongside older DDR5 4800 modules already installed?

Mixing speeds forces all channels to run at the lowest common rate, so the 5600 modules would drop to 4800; population rules also require identical rank and capacity per channel for best stability, so matching kits is recommended.

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