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Four black 240-pin DDR3L DIMMs, 16GB each, no heat spreaders

OWC

OWC 64GB (4x16GB) DDR3L 1866 CL13 1.35V desktop RAM

SKU CH-0SYS-29862

Four 16 GB DDR3L modules running at 1866 MHz CL13 and 1.35 V give 64 GB of unbuffered, non-ECC desktop memory

  • Capacity64GB (4 x 16GB)
  • SpeedDDR3L 1866 (PC3L 14900)
  • CAS LatencyCL13
  • Voltage1.35V
  • ECCNo
  • Buffered/RegisteredUnbuffered

Capacity 64GB (4 x 16GB)

  • 64 GB total capacity from four 16 GB modules
  • DDR3L 1866 speed with CL13 latency for responsive multitasking
  • Low 1.35 V operation reduces power draw and heat
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Unbuffered 240-pin UDIMM kit designed for desktop and workstation use

DDR3L 1866 quad-channel kit for desktop upgrades

This OWC kit supplies 64 GB of DDR3L memory across four 16 GB unbuffered UDIMMs. Each module runs at 1866 MT/s with a CAS latency of CL13 at the JEDEC-standard 1.35 V. The 240-pin DIMMs are non-ECC and carry no heat spreader, making them a straightforward drop-in for compatible desktop and workstation boards.

Suits DDR3L platforms needing maximum unbuffered

Builders restoring or expanding older DDR3L systems that accept 16 GB density per slot will reach 64 GB without mixing modules. Systems that require ECC, registered DIMMs, or a different DDR generation cannot use this kit. Boards limited to lower per-slot densities or higher voltage-only operation should look elsewhere.

16 GB per DIMM density decides fit

The 16 GB per module density is the single specification that determines whether a motherboard can populate all four slots to reach the full 64 GB. Verify that the target platform supports 2Rx8 16 GB DDR3L UDIMMs before purchase.

Highlights

  • 64 GB total capacity from four 16 GB modules
  • DDR3L 1866 speed with CL13 latency for responsive multitasking
  • Low 1.35 V operation reduces power draw and heat
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Unbuffered 240-pin UDIMM kit designed for desktop and workstation use

Specifications

BrandOWC
Part Number1U8T32R8064S
Capacity64GB (4 x 16GB)
SpeedDDR3L 1866 (PC3L 14900)
CAS LatencyCL13
Voltage1.35V
ECCNo
Buffered/RegisteredUnbuffered
Multi-channel KitDual Channel Kit
ColorBlack
Heat SpreaderNo
Recommend UseDesktops
LED ColorNone

Other versions of this model

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Questions about this item

Will this kit work in a system that only accepts 1.35 V DDR3L modules?

Yes, every module in the kit runs at 1.35 V, matching the DDR3L specification.

Does the motherboard need to support 16 GB per DIMM to use all four sticks?

The board must accept 16 GB density per slot; otherwise the full 64 GB will not be recognised.

Can I mix these sticks with existing DDR3 memory running at a different speed?

Mixing speeds forces the system to run at the slowest installed module, so matched kits are recommended.

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