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Green printed circuit board with black memory chips and gold edge connectors

A-Tech

A-Tech 4GB DDR4 2133MHz CL15 260-Pin SODIMM for IBM-Lenovo 4X70J67434 Laptop RAM

SKU CH-5W32-Q5AR9

4GB DDR4 2133MHz CL15 SODIMM laptop memory upgrade with 260-pin unbuffered design at 1.2V for compatible Lenovo systems

  • Total capacity4 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Recommended forAMD & Intel Compatible
  • 4GB capacity expands multitasking headroom for everyday workloads
  • DDR4 2133MHz speed accelerates application loading and data access
  • CL15 latency and 1.2V operation balance responsiveness with efficiency
  • 260-pin SODIMM form factor fits compatible laptop memory slots
  • Tested with major-brand chips for dependable system stability

4GB DDR4 2133MHz SODIMM upgrade

This 4GB DDR4 module runs at 2133MHz with CL15 timing and 1.20V operation. It uses a 260-pin SO-DIMM form factor built with major brand chips. The unbuffered, non-ECC design targets AMD and Intel laptop platforms needing a single-slot capacity increase.

Replaces IBM-Lenovo 4X70J67434

The module matches the specifications for IBM-Lenovo 4X70J67434, SM30E51243, 5M30K59778 and 5M30H35724. Swapping an existing 2GB or 4GB DDR4 stick for this unit adds headroom for multitasking when the system has a free slot or when replacing a lower-capacity module.

Verify DDR4 SO-DIMM support and slot availability

Confirm the laptop accepts DDR4 SO-DIMM memory at 2133MHz and uses 260-pin unbuffered modules. Check the maximum supported capacity per slot and total system limit in the manufacturer documentation. Ensure an empty slot exists or plan to remove the current module before ordering.

How it compares

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

Price $31.99
Cheaper than about 72% of the 2,079 comparable items (median $70.99).
Total capacity 4 GB
Lower than about 80% of the 1,886 comparable items (median 16 GB).
Price per GB $8.00 per GB
Pricier than about 70% of the 1,886 comparable items (median $5.94 per GB).

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Specifications

Product
Brand nameA-Tech
Total capacity4 GB
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2133 (PC4 17000)
Memory
CAS latencyCL15
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.2 V
Compatibility
Recommended forAMD & Intel Compatible

Questions about this item

Does the 260-pin DDR4 SODIMM fit a standard laptop memory slot?

Yes, the module uses the 260-pin DDR4 SO-DIMM form factor that matches the standard laptop memory slot.

What is the correct orientation when inserting the module, and which step do people often miss?

Align the notch on the module with the key in the slot, press firmly until the side clips click into place, and verify the module sits flat.

Will the 1.20 V DDR4 module need any firmware update or replacement after a few years?

No firmware update is required; the module runs at standard 1.20 V DDR4 voltage and is rated for the life of the laptop.

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