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Green circuit board with black chips 240 pin DDR3 module

OWC

OWC 4GB DDR3 1600 ECC Unbuffered UDIMM desktop RAM

SKU CH-1ZMA-TE0CK

A 4 GB DDR3 1600 module with ECC and 1.5 V operation for desktop, workstation or server upgrades

  • Capacity4GB
  • SpeedDDR3 1600 (PC3 12800)
  • CAS LatencyCL11
  • Voltage1.5V
  • ECCYes
  • Buffered/RegisteredUnbuffered

Capacity 4GB

  • ECC protection guards data integrity in critical workloads
  • 1600 MHz DDR3 speed supports responsive multitasking
  • 5 V operation matches standard desktop power requirements
  • 240-pin UDIMM form factor fits compatible workstation and server boards
  • CL11 latency delivers reliable timing for stable operation

ECC UDIMM for Workstations and Servers

This 4 GB DDR3 module adds error-correcting memory to compatible desktops, workstations and NAS systems. It runs at 1600 MHz with CL11 latency and operates at 1.5 V. The unbuffered design fits standard 240-pin DIMM slots without requiring registered memory support.

Thermals and Power in Normal Use

Operating at the standard 1.5 V JEDEC voltage keeps power draw low during typical workloads. No heat spreader is fitted, so the module relies on case airflow for cooling. Under normal desktop or server loads it runs quietly and stays within specification.

Build Integration and Upgrade Path

The single 4 GB stick occupies one 240-pin slot and leaves remaining slots free for further expansion. JEDEC compliance ensures a warranty-safe upgrade that meets OEM specifications. Installation is a straightforward DIY step on supported platforms.

Highlights

  • ECC protection guards data integrity in critical workloads
  • 1600 MHz DDR3 speed supports responsive multitasking
  • 5 V operation matches standard desktop power requirements
  • 240-pin UDIMM form factor fits compatible workstation and server boards
  • CL11 latency delivers reliable timing for stable operation

Specifications

BrandOWC
Part Number1E6D31R804GB
Capacity4GB
SpeedDDR3 1600 (PC3 12800)
CAS LatencyCL11
Voltage1.5V
ECCYes
Buffered/RegisteredUnbuffered
ColorBlack
Heat SpreaderNo
Recommend UseWorkstations, Servers, and NAS Systems
LED ColorNone

Other versions of this model

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Questions about this item

How do I install the 240-pin DDR3 UDIMM and what step is often missed?

Align the notch on the module with the slot key, press down firmly until both side clips click shut, then verify the system recognises the full 4GB capacity in BIOS or the OS memory report.

What maintenance or replacement will the ECC unbuffered module need over time?

The module has no moving parts or heat spreader; keep the system's internal airflow clean so the 1.5V DRAM stays within thermal limits, and replace only if memory diagnostics report correctable or uncorrectable ECC errors.

What limit appears first when the CL11 1600MHz DIMM runs sustained workloads?

The CAS latency of 11 cycles at 1600MHz sets the baseline access delay; under continuous load the memory controller's throughput ceiling is reached before the module's own timing becomes the bottleneck.

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