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Four green DDR5 SO-DIMM sticks, 262-pin, no heat spreader

OWC

OWC 128GB (4x32GB) DDR5 5200 CL42 2Rx8 262-pin 1.1V Non-ECC SODIMM laptop RAM

SKU CH-BX31-A1JBC

A 128GB kit of four 32GB DDR5 5200 CL42 SO-DIMM modules for laptops, all-in-ones and NAS systems

  • Capacity128GB (4 x 32GB)
  • Type262-Pin DDR5 SO-DIMM
  • SpeedDDR5 5200 (PC5 41600)
  • CAS LatencyCL42
  • Voltage1.1V
  • ECCNo

Capacity 128GB (4 x 32GB)

  • 128 GB total capacity from four 32 GB modules
  • DDR5 5200 speed with CL42 latency for responsive multitasking
  • Low 1.1 V operation reduces power draw and heat
  • JEDEC-standard compliant for warranty-safe upgrades
  • 262-pin SO-DIMM fits compatible laptops, all-in-ones and NAS systems

128GB DDR5 5200 SO-DIMM kit

This OWC kit provides 128GB of DDR5 memory across four 32GB SO-DIMMs. Each module runs at 5200 MT/s with CL42 latency at 1.1V. The 262-pin unbuffered non-ECC design targets laptops, all-in-one PCs and compatible NAS appliances.

Suits owners of DDR5 SO-DIMM slots needing maximum

Systems limited to two SO-DIMM sockets cannot install all four modules. Builders requiring ECC error correction or registered DIMMs must choose a different product. The kit is intended for platforms that accept 2Rx8 unbuffered DDR5 SO-DIMMs.

2Rx8 organisation at CL42

The 2Rx8 rank configuration and CL42 timing are the key parameters that decide whether a given platform will train and run stably with this memory. Verify the host system supports this rank structure and latency before purchase.

Highlights

  • 128 GB total capacity from four 32 GB modules
  • DDR5 5200 speed with CL42 latency for responsive multitasking
  • Low 1.1 V operation reduces power draw and heat
  • JEDEC-standard compliant for warranty-safe upgrades
  • 262-pin SO-DIMM fits compatible laptops, all-in-ones and NAS systems

Specifications

BrandOWC
Part Number5S2D52R8128S
Capacity128GB (4 x 32GB)
Type262-Pin DDR5 SO-DIMM
SpeedDDR5 5200 (PC5 41600)
CAS LatencyCL42
Voltage1.1V
ECCNo
Buffered/RegisteredUnbuffered
Multi-channel KitDual Channel Kit
Heat SpreaderNo
Recommend UseLaptops, All-in-One Systems, and NAS Systems

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Questions about this item

How do I install the four 262-pin DDR5 SO-DIMM modules and what step is often missed?

Power off the laptop, open the memory compartment, align each module's notch with the slot key, press firmly until the retention clips click, then verify all four 32 GB modules appear in the BIOS.

What maintenance or replacement will this 128 GB kit need over time?

No routine maintenance is required; the modules are non-ECC unbuffered DDR5 with no heat spreader, so only a failed stick would need replacement under the limited lifetime warranty.

What limit appears first when the memory runs at 5200 MT/s CL42 under sustained load?

The CAS latency of 42 cycles at 5200 MT/s sets the timing floor, so latency-sensitive workloads hit that ceiling before bandwidth saturates.

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