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Green circuit board DDR5 RDIMM module with black chips, no heat spreader, 288 gold pins

OWC

OWC 16GB DDR5 5600 CL46 1Rx8 ECC Registered RDIMM 1.1V

SKU CH-M2FK-9C5VW

16GB DDR5 5600 ECC Registered RDIMM with CL46 latency and 1.1V operation for compatible servers and workstations

  • Total capacity16 GB
  • Rated speedDDR5 5600 (PC5 44800)
  • CAS latencyCL46
  • 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 capacity expands memory for heavy workloads
  • DDR5 5600 speed delivers high bandwidth throughput
  • 1 V operation reduces power draw per module
  • 288-pin RDIMM form factor fits compatible server slots

Server ECC RDIMM

This 16GB DDR5 module delivers registered ECC memory for workstations and servers. It operates at 5600 MT/s with CL46 latency and a 1.1V supply. The single-rank 1Rx8 design uses 288-pin JEDEC-standard construction without a heat spreader. OWC validates every unit for warranty-safe upgrades.

Workstation and server builders

Systems that require registered ECC DDR5 RDIMMs for error-correcting stability will accept this module. Desktop PCs and consumer laptops cannot use registered memory and must look elsewhere. It also cannot be mixed with unbuffered or load-reduced ECC DIMMs in the same platform.

5600 MT/s registered ECC speed

The DDR5 5600 (PC5-44800) CL46 specification is the single figure that decides compatibility. Your motherboard and CPU must explicitly support DDR5 5600 registered ECC RDIMMs at 1.1V for this module to function.

How it compares

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

Price $418.99
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 $26.19 per GB
Pricier than about 87% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number5R6D51R816 GB
Total capacity16 GB
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Memory
CAS latencyCL46
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

Does the 1.1 V DDR5 5600 RDIMM generate noticeable heat or fan noise during continuous server workloads?

The module runs at the standard DDR5 1.1 V and has no heat spreader, so thermal output matches JEDEC baseline figures; actual case airflow and fan curves determine any audible noise.

What motherboard features are required for this 288-pin ECC registered DIMM to function?

A workstation or server board with DDR5 RDIMM slots, registered-buffer support and ECC enabled in firmware is mandatory; standard desktop platforms will not accept this module.

Can this CL46 1Rx8 stick share a channel with other registered ECC DDR5 modules of different capacities?

OWC recommends matching capacity, speed and manufacturer for optimal performance; mixing ranks or densities may work but is not validated by the supplier.

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