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Two black 240-pin DDR3L UDIMM modules without heat spreaders

OWC

OWC 8GB (2x4GB) DDR3L 1866 CL13 1.35V ECC UDIMM Kit

SKU CH-GSQG-MZRFZ

Dual-channel 8 GB DDR3L kit at 1866 MHz with ECC and 1.35 V for workstations and servers

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR3L 1866 (PC3L 14900)
  • CAS latencyCL13
  • Rated voltage1.35 V
  • Buffer typeUnbuffered
  • Kit configurationDual Channel Kit

Capacity 8GB (2 x 4GB)

  • ECC protection guards data integrity in critical workloads
  • 35 V DDR3L operation reduces power draw and heat
  • Dual-channel 8 GB kit (2 × 4 GB) doubles memory bandwidth
  • CL13 latency at 1866 MHz delivers responsive multitasking
  • 240-pin unbuffered UDIMM fits standard desktop, workstation and server slots

DDR3L 1866 ECC UDIMM Kit

This OWC kit provides eight gigabytes of DDR3L memory in a matched pair of four-gigabyte modules. The sticks run at 1866 MT/s with a CAS latency of 13 and operate at the low 1.35 volt DDR3L standard. Error-correcting code and unbuffered operation make the kit suitable for workstations, servers and NAS units that require data integrity.

Suited for ECC platforms only

Systems that support unbuffered ECC DDR3L will benefit from the error detection and correction these modules provide. Desktop boards without ECC support in the chipset or BIOS cannot use the feature and should select non-ECC memory instead. The dual-channel configuration helps bandwidth on compatible two-slot or four-slot motherboards.

Straightforward DIMM installation

Each 240-pin module keys into a standard DDR3 desktop slot; align the notch and press until the retention clips latch. Common issues include mixing these ECC sticks with non-ECC modules or populating slots in the wrong order for the platform's channel layout. Consult the system manual for the approved population sequence.

How it compares

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

Price $31.99
Cheaper than about 77% of the 3,647 comparable items (median $90.99).
Total capacity 8 GB (2 × 4 GB)
Lower than about 60% of the 3,251 comparable items (median 16 GB).
Price per GB $4.00 per GB
Cheaper than about 84% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameOWC
Part number1E8T31R8008P
Total capacity8 GB (2 × 4 GB)
Product colorBlack
Performance
Rated speedDDR3L 1866 (PC3L 14900)
Memory
CAS latencyCL13
ECC supportYes
Buffer typeUnbuffered
Kit configurationDual Channel Kit
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

Does my motherboard need a 240-pin DDR3L slot that accepts 1.35 V unbuffered ECC modules for this kit to work?

Yes, the kit uses 240-pin DDR3L UDIMMs at 1.35 V with ECC, so the board must support that exact combination.

Can I keep my existing CL11 DDR3L 1866 sticks and add this CL13 kit without timing conflicts?

The board will run all modules at the slowest common settings, so the CL13 modules will operate at CL13 alongside CL11 sticks.

How do I confirm the system sees the full 8 GB at 1866 MT/s with ECC active after installation?

Check the BIOS memory summary or run a tool like CPU-Z; it should report 8 GB, 1866 MHz, and ECC enabled.

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