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Black 240-pin DDR3L UDIMM module with gold contacts and no heat spreader

OWC

OWC 4GB DDR3L 1866 CL13 ECC Unbuffered UDIMM 1.35V desktop RAM

SKU CH-8M3E-RZJNR

A 4 GB DDR3L 1866 CL13 ECC unbuffered UDIMM running at 1.35 V for desktops, workstations or servers

  • Total capacity4 GB
  • Rated speedDDR3L 1866 (PC3L 14900)
  • CAS latencyCL13
  • Rated voltage1.35 V
  • Buffer typeUnbuffered
  • Recommended forWorkstations, Servers, and NAS Systems

Capacity 4GB

  • ECC protection safeguards data integrity with built-in error correction
  • 35V DDR3L operation reduces power draw versus standard DDR3
  • 1866MHz CL13 timing delivers responsive throughput for workstation workloads
  • Single 4GB UDIMM adds capacity without occupying extra slots
  • JEDEC and RoHS compliance ensures warranty-safe installation

OWC 4GB DDR3L 1866 ECC UDIMM

This module is a single 4GB DDR3L 1866 PC3L-14900 CL13 unbuffered ECC UDIMM built for select desktops, workstations and servers that require error-correcting memory. It operates at 1.35 volts and follows JEDEC-standard specifications for a warranty-safe upgrade.

240-pin DDR3L form factor and black PCB

The stick uses the standard 240-pin DDR3L DIMM layout with no heat spreader and no LEDs, so it fits into ordinary desktop or server memory slots without extra clearance concerns. Unbuffered ECC organisation means the memory controller handles error correction directly, which suits many workstation and NAS platforms.

Check your board for DDR3L 1.35V unbuffered ECC

Verify that the motherboard or system accepts DDR3L at 1.35 volts and can run unbuffered ECC UDIMMs at 1866 MT/s with CL13 timing. Some platforms only support registered ECC or require 1.5 volt DDR3, so consult the vendor memory-qualified list before ordering.

How it compares

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

Price $19.99
Cheaper than about 88% of the 3,647 comparable items (median $90.99).
Total capacity 4 GB
Lower than about 80% of the 3,251 comparable items (median 16 GB).
Price per GB $5.00 per GB
Cheaper than about 72% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameOWC
Part number1E8T31R804 GB
Total capacity4 GB
Product colorBlack
Performance
Rated speedDDR3L 1866 (PC3L 14900)
Memory
CAS latencyCL13
ECC supportYes
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.35 V
Compatibility
Recommended forWorkstations, Servers, and NAS Systems
More details
LED lightingNone

Other versions of this model

5 more in the same range

Questions about this item

What speed does the DDR3L 1866 interface actually run at?

The module operates at 1866 MHz with a CAS latency of CL13, matching the PC3L-14900 rating.

What physical slot and pin count does this 240-pin UDIMM need?

It fits a standard 240-pin DDR3 desktop DIMM socket and uses the 1Rx8 layout.

How is the module installed and which step is often missed?

Power off, open the case, align the notch, press firmly until both retention clips click, then verify 1.35 V operation in BIOS.

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