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

A-Tech

A-Tech 4GB DDR4 2400MHz CL17 SODIMM 260-Pin Laptop RAM

SKU CH-21QQ-6HQGB

4GB DDR4 2400MHz CL17 SODIMM laptop memory module for compatible system upgrades

  • Total capacity4 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Recommended forCompatible Replacement for Crucial CT4G4SFS624A
  • Boosts system responsiveness with 4GB DDR4 2400MHz memory
  • CL17 latency supports smooth multitasking
  • 2V operation reduces power draw
  • 260-pin SO-DIMM fits compatible laptops
  • Non-ECC unbuffered design for consumer notebooks

A-Tech 4GB DDR4 2400 SODIMM

This 4GB DDR4 2400MHz CL17 SODIMM module is built as a compatible replacement for Crucial CT4G4SFS624A. It fits laptops, notebooks and all-in-one computers that accept 260-pin DDR4 SO-DIMM memory. The unbuffered, non-ECC design operates at standard 1.20V voltage.

Upgraders with a single-slot limit

This module suits owners who need a direct 4GB replacement or a single-slot upgrade matching the Crucial CT4G4SFS624A specification. Buyers who want more than 4GB total capacity or require ECC registered memory should look at other options.

260-pin DDR4 2400 CL17 at 1.20V

The 260-pin DDR4 interface running at 2400MHz with CL17 latency and 1.20V power draw is the decisive specification. Verify that your system supports DDR4 SO-DIMM at this speed and pin count before purchase.

How it compares

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

Price $27.99
Cheaper than about 76% 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 $7.00 per GB
Pricier than about 61% of the 1,886 comparable items (median $5.94 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for Crucial
Model nameCT4G4SFS624A
Total capacity4 GB
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forCompatible Replacement for Crucial CT4G4SFS624A

Questions about this item

What comes in the box and do I need anything else to install it?

The package contains a single 4GB DDR4 260-pin SO-DIMM module. No extra parts or tools are required beyond a compatible laptop slot.

There are several speed and capacity codes listed — which one should I pick?

Choose the module rated 2400 MHz, PC4-19200, CL17, 1.20 V, 4 GB, non-ECC, unbuffered — it matches the Crucial CT4G4SFS624A replacement spec.

What does the 2400 MHz rating actually deliver inside my laptop?

It runs at 2400 MT/s with CAS latency 17 at the standard 1.20 V DDR4 voltage, providing the rated PC4-19200 bandwidth for supported notebooks.

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