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

A-Tech

A-Tech 4GB DDR4 2133MHz CL15 260-Pin SODIMM 1.2V Laptop RAM

SKU CH-21F2-EGJ64

4GB DDR4 SODIMM at 2133MHz with CL15 latency and 1.2V operation for laptop upgrades

  • 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 delivers responsive data throughput
  • CL15 latency keeps access times tight
  • 2V operation matches DDR4 standard for broad laptop compatibility
  • 260-pin SO-DIMM form factor fits standard DDR4 laptop slots

Capacity and form factor

This is a 4GB DDR4 2133MHz CL15 260-pin SODIMM module built for laptop, notebook and all-in-one upgrades. It runs at the standard 1.20V DDR4 voltage and is unbuffered non-ECC. The kit contains a single stick ready to install in an empty slot.

Who it suits and who it does not

It suits owners of compatible AMD and Intel laptops that accept a single 4GB DDR4 SODIMM at this speed and latency. Buyers who need a higher total capacity, a different speed grade, ECC error correction or registered buffering should look for modules that match those requirements.

Deciding specification

The module is a 260-pin DDR4 SO-DIMM rated at 2133MHz PC4-17000 with CL15 timing and 1.20V operation; verify that your system supports this exact combination before ordering.

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).

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
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

My laptop has a 260-pin DDR4 slot — does this module fit?

Yes — it is a 260-pin DDR4 SO-DIMM running at 2133 MHz with CL15 timing and 1.20 V, the standard laptop form factor.

Will it run with my existing DDR4 2133 memory?

It matches the same 2133 MHz speed and CL15 latency, so the system will operate both modules at that common rate.

How can I confirm the upgrade is active after installing it?

Check the BIOS or OS memory report — it should show the additional 4 GB recognised at 2133 MHz with CL15 timings.

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