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Four black DDR3 UDIMM sticks in a row

OWC

OWC 16GB (4x4GB) DDR3 1066 CL7 ECC Unbuffered UDIMM desktop RAM

SKU CH-EDBA-8SZZY

Kit of four 4 GB DDR3 1066 CL7 ECC unbuffered UDIMMs for desktops, workstations and servers

  • Capacity16GB (4 x 4GB)
  • SpeedDDR3 1066 (PC3 8500)
  • CAS LatencyCL7
  • Voltage1.5V
  • ECCYes
  • Buffered/RegisteredUnbuffered

Capacity 16GB (4 x 4GB)

  • ECC protection guards data integrity in critical workloads
  • 16 GB total capacity across four 4 GB modules
  • DDR3 1066 CL7 timing balances speed and stability
  • 5 V operation matches standard desktop and server power rails
  • 240-pin unbuffered UDIMM fits compatible workstation and NAS boards

16GB DDR3 ECC Kit

This kit supplies 16GB of DDR3 1066 memory in four 4GB unbuffered ECC UDIMM modules. It targets desktop workstations, servers and NAS systems that require error-correcting memory for data integrity. The modules run at 1.5V with a CAS latency of CL7 and use the standard 240-pin form factor.

Replaces Non-ECC or Smaller Kits

The upgrade is worth it when your current system uses non-ECC memory and you need hardware-level error correction for critical workloads. It also makes sense when the board has four slots and you want to populate them with a matched dual-channel kit rather than mixing modules of different speeds or capacities.

Check Board Compatibility First

Verify that your motherboard or server platform supports DDR3 1066 ECC unbuffered UDIMMs and can address the full 16GB across four slots. Confirm the memory controller accepts 2Rx8 organisation and 1.5V operation. Ensure the BIOS is current enough to initialise all four modules at the rated speed.

Highlights

  • ECC protection guards data integrity in critical workloads
  • 16 GB total capacity across four 4 GB modules
  • DDR3 1066 CL7 timing balances speed and stability
  • 5 V operation matches standard desktop and server power rails
  • 240-pin unbuffered UDIMM fits compatible workstation and NAS boards

Specifications

BrandOWC
Part Number8E5D32R8016S
Capacity16GB (4 x 4GB)
SpeedDDR3 1066 (PC3 8500)
CAS LatencyCL7
Voltage1.5V
ECCYes
Buffered/RegisteredUnbuffered
Multi-channel KitDual Channel Kit
ColorBlack
Heat SpreaderNo
Recommend UseWorkstations, Servers, and NAS Systems
LED ColorNone

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Questions about this item

Will the 240-pin DDR3 UDIMMs fit my desktop motherboard slots?

These modules use the standard 240-pin DDR3 UDIMM form factor, so they install in any desktop, workstation or server board that accepts unbuffered ECC DDR3 memory.

What is the correct way to seat the four modules for dual-channel operation?

Insert each stick firmly until the retention clips click; the common mistake is stopping when the gold contacts first touch the socket instead of pressing until both clips lock.

Do these ECC modules need any firmware updates or periodic replacement?

No firmware is involved and the JEDEC-compliant DDR3 chips have no scheduled replacement interval; they run at 1.5 V for the life of the system.

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