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Two green DDR5 SODIMM modules with black chips, no heat spreader

OWC

OWC 64GB (2x32GB) DDR5 4800 CL40 262-pin SODIMM laptop RAM

SKU CH-4ST9-PCH1M

Dual-channel 64 GB DDR5 4800 CL40 kit for laptops, all-in-ones and NAS systems

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeUnbuffered
  • Kit configurationDual Channel Kit
  • 64 GB dual-channel kit enables heavy multitasking
  • DDR5 4800 CL40 speed lifts system responsiveness
  • 1 V operation reduces power draw and heat
  • 262-pin SODIMM form factor fits laptops and NAS units
  • JEDEC and RoHS compliant for warranty-safe upgrades

64GB DDR5 4800 dual-channel kit

This OWC kit supplies 64GB of DDR5 laptop memory in two 32GB modules. The modules run at 4800 MT/s with CL40 latency at 1.1V. They are unbuffered, non-ECC SODIMMs built to JEDEC specification and intended as a warranty-safe upgrade for compatible laptops, all-in-one PCs and NAS units.

262-pin SODIMM fits DDR5 slots

Each module uses the standard 262-pin SO-DIMM form factor and requires a DDR5-capable memory controller. The dual-channel kit populates two slots to enable interleaved access. No heat spreader is fitted, so clearance inside thin chassis is not affected. The 1.1V operating voltage matches the JEDEC baseline for DDR5 SODIMMs.

Suits owners needing maximum capacity

Buyers who want the highest density currently offered in a two-module DDR5 SODIMM kit will find 64GB useful for heavy multitasking, large datasets or virtual machines. Systems limited to 32GB total or to a single SODIMM slot cannot use this kit. Buyers needing ECC or registered memory should look elsewhere.

How it compares

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

Price $788.99
Pricier than about 91% of the 2,079 comparable items (median $70.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 91% of the 1,886 comparable items (median 16 GB).
Price per GB $12.33 per GB
Pricier than about 89% of the 1,886 comparable items (median $5.94 per GB).

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Specifications

Product
Brand nameOWC
Part number4S8D52R8064P
Total capacity64 GB (2 × 32 GB)
Product type262-Pin DDR5 SO-DIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportNo
Buffer typeUnbuffered
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Recommended forLaptops, All-in-One Systems, and NAS Systems

Questions about this item

Does the CL40 latency become the bottleneck during sustained workloads?

CL40 is the JEDEC-standard timing for DDR5 4800 modules; sustained throughput is limited by the 4800 MT/s data rate and the dual-channel configuration of the 2x32GB kit.

How much heat and power does the 1.1V kit produce when running all day?

The modules operate at the standard DDR5 1.1V with no heat spreader; power draw scales with the 4800 MT/s speed and 64GB capacity, and typical laptop cooling handles the thermal load.

What must my laptop already have for this 262-pin SODIMM kit to work?

Your system needs two free DDR5 SO-DIMM slots that accept 262-pin unbuffered non-ECC modules at 4800 MT/s and 1.1V, plus a memory controller that supports 32GB per rank.

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