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Green rectangular circuit board with gold edge connectors and black memory chips, no heat spreader

OWC

OWC 16GB DDR5 5200 PC5-41600 CL42 1Rx8 288-pin 1.1V ECC Registered RDIMM server RAM

SKU CH-EVTN-YHCRV

A 16 GB DDR5 5200 ECC registered RDIMM for workstations, servers and NAS systems

  • Total capacity16 GB
  • Rated speedDDR5 5200 (PC5 41600)
  • CAS latencyCL42
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank1Rx8

Capacity 16GB

Show 4 more

Rank 1Rx8

  • ECC registered design protects data integrity in servers
  • 16 GB DDR5 5200 speed boosts memory bandwidth
  • CL42 latency at 1.1 V reduces power draw
  • Single 1Rx8 rank simplifies capacity planning
  • JEDEC and RoHS compliant for warranty-safe upgrades

Server-grade DDR5 RDIMM

This OWC module delivers 16GB of DDR5 5200 memory with ECC registered operation at CL42 latency. It uses a 288-pin RDIMM form factor and runs at 1.1V, built to JEDEC and ROHS standards for workstation and server environments.

Registered ECC integration

The registered buffer and ECC functionality require a platform that supports registered DDR5 DIMMs and cannot be mixed with unbuffered or load-reduced modules. A single 1Rx8 rank layout leaves additional slots free for capacity expansion on compatible motherboards.

Workstation and server builders

Suited for administrators upgrading select workstations, NAS systems or network switches that accept registered ECC DDR5. Not for standard desktop PCs, consumer laptops or any system lacking registered memory support.

How it compares

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

Price $423.99
Pricier than about 67% of the 6,523 comparable items (median $188.99).
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $26.50 per GB
Pricier than about 88% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number5R2D51R816 GB
Total capacity16 GB
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 5200 (PC5 41600)
Memory
CAS latencyCL42
ECC supportYes
Buffer typeRegistered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.1 V

Other versions of this model

5 more in the same range

Questions about this item

Will the CL42 latency limit throughput before the 5200 MT/s speed does during sustained workloads?

At DDR5 5200 the module runs at CL42, so the CAS latency and data rate scale together; neither acts as a separate bottleneck under continuous load.

How much heat does the 1.1 V registered DIMM produce when it runs all day without a spreader?

The 1.1 V DDR5 registered design keeps power draw low, and the bare PCB dissipates heat adequately in normal server airflow without a dedicated spreader.

Must the host system already support DDR5 ECC registered RDIMMs and a 288-pin slot for this module to work?

Yes, the module requires a platform that accepts DDR5 ECC registered 288-pin RDIMMs; it will not function in unbuffered, load-reduced or non-DDR5 sockets.

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