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Black 240-pin DDR3 UDIMM module with gold contacts and black PCB no heat spreader

OWC

OWC 4GB DDR3 1866 ECC Unbuffered UDIMM desktop RAM

SKU CH-41ZW-EKR6Y

4GB DDR3 1866 ECC unbuffered UDIMM for desktops, workstations and servers

  • Capacity4GB
  • SpeedDDR3 1866 (PC3 14900)
  • CAS LatencyCL13
  • Voltage1.5V
  • ECCYes
  • Buffered/RegisteredUnbuffered

Capacity 4GB

  • ECC protection guards data integrity in critical workloads
  • 1866 MHz DDR3 speed lifts bandwidth for demanding tasks
  • CL13 latency keeps response tight under load
  • 5 V JEDEC standard voltage ensures broad platform compatibility
  • 240-pin UDIMM form factor fits desktop, workstation and server slots

Capacity and role

This 4 GB DDR3 module delivers ECC unbuffered memory for desktops, workstations and NAS systems that require error correction without registered buffering. The single DIMM plugs into a standard 240-pin slot and runs at the JEDEC 1.5 V level.

Speed headroom

Rated at 1866 MT/s (PC3-14900) with CL13 latency, the module handles everyday multitasking and typical server workloads within its validated timing envelope. Performance scales with the platform memory controller, so maximum throughput depends on the host system capabilities.

Build fit

The stick uses a plain black PCB with no heat spreader, keeping the profile low for tight DIMM spacing. It requires a motherboard that supports DDR3 ECC unbuffered DIMMs; no extra power connectors, cooling or software configuration are needed beyond standard BIOS detection.

Helstu kostir

  • ECC protection guards data integrity in critical workloads
  • 1866 MHz DDR3 speed lifts bandwidth for demanding tasks
  • CL13 latency keeps response tight under load
  • 5 V JEDEC standard voltage ensures broad platform compatibility
  • 240-pin UDIMM form factor fits desktop, workstation and server slots

Tæknilýsing

BrandOWC
Part Number1E8D31R804GB
Capacity4GB
SpeedDDR3 1866 (PC3 14900)
CAS LatencyCL13
Voltage1.5V
ECCYes
Buffered/RegisteredUnbuffered
ColorBlack
Heat SpreaderNo
Recommend UseWorkstations, Servers, and NAS Systems
LED ColorNone

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Will this DDR3 1866 CL13 ECC UDIMM run alongside my existing DDR3 modules?

The module operates at DDR3 1866 with CL13 timing and 1.5V voltage. Mixing speeds or ECC with non-ECC memory is not recommended; the system will typically default to the slowest installed module and may disable ECC.

How can I confirm the 4GB DDR3 1866 module is running at PC3-14900 CL13 after installation?

Check the memory speed and timings in BIOS/UEFI or use a system information tool such as CPU-Z; it should report DDR3 1866 MHz, CL13 latency, and ECC support active.

Does the 240-pin UDIMM come with a heat spreader or any extra accessories in the box?

The module is supplied as a single black 240-pin UDIMM without a heat spreader; no cables, brackets or additional components are included.

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