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Green circuit board with gold edge connectors and black memory chips

OWC

OWC 1R6D31R408GB 8GB DDR3 1600 CL11 1Rx4 240-pin 1.5V ECC Registered RDIMM server RAM

SKU CH-CEP6-XKG56

8GB DDR3-1600 ECC registered DIMM adds reliable capacity to compatible servers and workstations

  • Total capacity8 GB
  • Rated speedDDR3 1600 (PC3 12800)
  • CAS latencyCL11
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • Memory rank1Rx4

Capacity 8GB

Rank 1Rx4

  • ECC registered design protects data integrity in servers
  • 8 GB capacity expands memory for demanding workloads
  • DDR3 1600 speed delivers responsive performance
  • 5 V operation meets JEDEC standard specifications
  • 240-pin RDIMM form factor fits compatible workstations

8GB DDR3 ECC Registered DIMM

This single 8GB DDR3 1600 module uses a 240-pin RDIMM form factor with CL11 latency and 1.5V operation. It is built for workstations, servers and NAS systems that require ECC registered memory. The module carries JEDEC and ROHS compliance for warranty-safe upgrades.

Replaces unbuffered or lower-capacity DDR3

Swapping unbuffered DIMMs for this registered ECC module adds error correction and signal buffering demanded by server chipsets. The upgrade is worth it when the platform explicitly supports registered memory and the current configuration limits multitasking or virtualization capacity.

Verify registered DIMM support before ordering

Confirm the motherboard or system manual lists DDR3 1600 registered ECC RDIMMs as compatible. Mixing this module with unbuffered memory will prevent boot. Ensure all populated slots use identical registered ECC specifications for stable operation.

How it compares

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

Price $23.99
Cheaper than about 93% of the 6,523 comparable items (median $188.99).
Total capacity 8 GB
Lower than about 80% of the 6,064 comparable items (median 32 GB).
Price per GB $3.00 per GB
Cheaper than about 89% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number1R6D31R408 GB
Total capacity8 GB
Product type240-Pin DDR3 ECC RDIMM
Performance
Rated speedDDR3 1600 (PC3 12800)
Memory
CAS latencyCL11
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Heat spreaderNo
Power
Rated voltage1.5 V

Other versions of this model

5 more in the same range

Questions about this item

Does the 240-pin DDR3 RDIMM fit a standard server DIMM slot?

Yes, the 240-pin DDR3 form factor matches standard registered DIMM slots used in compatible workstations, servers and NAS systems.

What is the correct way to seat the registered ECC module so the register engages?

Align the notch with the slot key, press straight down until both side latches click, confirming the register circuitry is fully seated.

When should the 8GB 1Rx4 module be replaced?

Replace it if system logs show rising correctable ECC error counts or if a full memory test reports uncorrectable faults on this module.

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