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

A-Tech

A-Tech 4GB DDR3L 1333MHz CL9 1.35V SODIMM laptop RAM

SKU CH-JYKG-KYBC1

4GB DDR3L 1333MHz CL9 1.35V SODIMM laptop memory upgrade for compatible notebooks

  • Total capacity4 GB
  • Rated speedDDR3L 1333 (PC3L 10600)
  • CAS latencyCL9
  • Rated voltage1.35 V
  • Buffer typeUnbuffered
  • Recommended forCompatible Replacement for Corsair CMSO4GX3M1A1333C9
  • 4GB capacity lets you run more applications at once
  • 1333 MHz DDR3L speed improves data throughput
  • Low 1.35 V DDR3L voltage reduces power draw
  • 204-pin SO-DIMM form factor fits standard laptop slots
  • Tested replacement for Corsair CMSO4GX3M1A1333C9 ensures compatibility

4GB DDR3L 1333MHz SODIMM

This 4GB DDR3L module runs at 1333MHz with CL9 latency and 1.35V operation. It uses the 204-pin SO-DIMM form factor for laptop, notebook and all-in-one computers. The unbuffered non-ECC design suits standard consumer platforms. It is a compatible replacement for the Corsair CMSO4GX3M1A1333C9 part.

DDR3L voltage and speed limits

DDR3L memory operates at 1.35V, lower than standard DDR3 at 1.5V, though many DDR3L modules can run at the higher voltage if the system requires it. The 1333MHz speed rating (PC3-10600) sets the maximum data rate; the system will downclock the module if the memory controller supports only a lower frequency. CAS latency of CL9 defines the timing at this speed.

Check laptop memory specs before ordering

Verify that your laptop or all-in-one accepts 204-pin DDR3L SO-DIMM modules and supports 1.35V operation. Confirm the maximum capacity per slot and the total memory limit for your specific model. Ensure the system does not require ECC or registered memory, as this module is unbuffered non-ECC. Check the number of available slots to plan your upgrade correctly.

How it compares

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

Price $12.99
Cheaper than about 94% 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 $3.25 per GB
Cheaper than about 89% of the 1,886 comparable items (median $5.94 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for Corsair
Model nameCMSO4GX3M1A1333C9
Total capacity4 GB
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3L 1333 (PC3L 10600)
Memory
CAS latencyCL9
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.35 V
Compatibility
Recommended forCompatible Replacement for Corsair CMSO4GX3M1A1333C9

Questions about this item

Should I choose the 4 GB DDR3L 1333 MHz CL9 1.35 V module or a different capacity?

This listing is for a single 4 GB stick; if your laptop has two slots and supports 8 GB total, adding a second identical module will give you dual-channel bandwidth.

What does the 1333 MHz rating actually deliver inside my laptop?

The module runs at 1333 MHz with CL9 timings at 1.35 V, providing PC3L-10600 bandwidth for faster application loading and smoother multitasking.

Is the 204-pin DDR3L SO-DIMM interface compatible with my notebook?

It uses the standard 204-pin DDR3L SO-DIMM form factor, so it fits any laptop slot designed for DDR3L 1.35 V memory.

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