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Four green 260-pin DDR4 SO-DIMM sticks without heat spreaders

OWC

OWC 128GB (4x32GB) DDR4 2933MHz CL21 ECC SO-DIMM laptop RAM

SKU CH-6P2P-F5V8E

128 GB DDR4 2933 MHz ECC SO-DIMM kit of four 32 GB modules for laptops, all-in-one PCs and NAS systems

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Kit configurationDual Channel Kit

Capacity 128GB (4 x 32GB)

  • 128GB total capacity with four 32GB modules
  • ECC error correction protects data integrity in NAS and servers
  • DDR4 2933MHz CL21 speed for responsive multitasking
  • 2V low voltage reduces power draw and heat
  • Backwards compatible with 2666, 2400 and 2133MHz systems

128GB DDR4 ECC SO-DIMM Kit for Laptops and NAS

This kit provides 128GB of DDR4 ECC memory in four 32GB modules running at 2933MHz with CL21 latency. It is built for laptops, all-in-one PCs and NAS devices that accept 260-pin SO-DIMMs. The unbuffered design operates at the standard 1.2V JEDEC voltage. Buyers whose systems require registered or load-reduced DIMMs cannot use this kit.

ECC Unbuffered Operation at 2933MHz

Each module delivers ECC error correction without registered buffering, a combination required by many micro-servers and NAS platforms. The rated speed is PC4-23400 2933MHz CL21, and the modules are backward compatible with 2666MHz, 2400MHz and 2133MHz buses. Systems that only support non-ECC memory or that mandate registered modules will not work with these sticks.

Four-Module Kit Enables Full Population

The package contains four identical 32GB sticks, allowing a four-slot system to reach the full 128GB capacity in a single purchase. No heat spreaders are included, so clearance inside compact chassis remains minimal. Users with only two SO-DIMM slots cannot install the full kit and would need a two-module alternative.

How it compares

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

Price $898.99
Pricier than about 92% of the 2,079 comparable items (median $70.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 94% of the 1,886 comparable items (median 16 GB).
Price per GB $7.02 per GB
Pricier than about 61% of the 1,886 comparable items (median $5.94 per GB).

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Specifications

Product
Brand nameOWC
Part number2C9D42R8128S
Total capacity128 GB (4 × 32 GB)
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
ECC supportYes
Buffer typeUnbuffered
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forLaptops, All-in-One Systems, and NAS Systems

Other versions of this model

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Questions about this item

What does the 2933 MHz speed mean for real-world laptop performance?

The modules run at 2933 MHz with CL21 latency and will down-clock to 2666 MHz, 2400 MHz or 2133 MHz if the system requires it.

How does the PC4-23400 rating limit bandwidth on a typical laptop?

PC4-23400 is the JEDEC designation for DDR4 2933; actual throughput is determined by the memory controller and channel configuration of the host device.

Will these 260-pin SO-DIMMs fit in a standard laptop memory slot?

Yes, each 32 GB module uses the standard 260-pin DDR4 SO-DIMM form factor without a heat spreader, so it fits regular laptop SO-DIMM sockets.

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