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Four green DDR5 ECC registered RDIMM modules without heat spreaders

OWC

OWC 5R2D51R8064S 64GB (4x16GB) DDR5 5200 CL42 ECC Registered RDIMM Server RAM

SKU CH-ZMQC-0M1CZ

Four 16 GB DDR5 5200 CL42 ECC registered RDIMMs provide 64 GB of error-correcting server memory at 1.1 V

  • Capacity64GB (4 x 16GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 5200 (PC5 41600)
  • CAS LatencyCL42
  • Voltage1.1V
  • ECCYes

Capacity 64GB (4 x 16GB)

Show 4 more configurations

Rank 1Rx8

  • ECC registered design protects data integrity in servers
  • 5200 MHz DDR5 speed accelerates demanding workloads
  • 1 V operation reduces power draw per module
  • 64 GB quad-channel kit expands memory capacity
  • JEDEC compliant build ensures broad workstation compatibility

Server ECC RDIMM Kit

This OWC kit supplies 64 GB of DDR5 ECC registered memory in four 16 GB modules. It targets administrators upgrading select workstations, servers, NAS systems or network switches that require registered DIMMs.

Registered Buffer and ECC Impact

The registered buffer reduces electrical load on the memory controller, allowing larger populations per channel. ECC corrects single-bit errors, improving data integrity for critical workloads. The kit cannot be mixed with unbuffered or load-reduced modules.

Platform Verification Required

Confirm that your motherboard or system supports DDR5 288-pin registered RDIMMs at 1.1 V. Verify the qualified vendor list for 5200 MT/s CL42 1Rx8 modules and ensure the CPU memory controller accepts registered ECC.

Highlights

  • ECC registered design protects data integrity in servers
  • 5200 MHz DDR5 speed accelerates demanding workloads
  • 1 V operation reduces power draw per module
  • 64 GB quad-channel kit expands memory capacity
  • JEDEC compliant build ensures broad workstation compatibility

Specifications

BrandOWC
Part Number5R2D51R8064S
Capacity64GB (4 x 16GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 5200 (PC5 41600)
CAS LatencyCL42
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx8
Multi-channel KitDual Channel Kit
Heat SpreaderNo

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Will the 288-pin DDR5 RDIMMs need any active cooling or heat-spreader replacement over time?

The modules ship without a heat spreader and operate at the standard 1.1 V; no active cooling or spreader replacement is required under normal server airflow.

What is the first latency ceiling you hit when the 5200 MT/s CL42 kit runs continuously?

The JEDEC-rated CAS latency of CL42 is the fixed timing limit; sustained workloads cannot push latency lower than this value.

How much power and heat do the four 16 GB sticks produce when the server runs all day?

Each module draws 1.1 V at DDR5 5200 speeds, so the 64 GB kit stays within standard RDIMM thermal envelopes without extra cooling.

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