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

A-Tech

A-Tech 16GB DDR4 2133MHz CL15 260-Pin SODIMM Kingston KCP421SD8/16 KVR21S15D8/16 Laptop RAM

SKU CH-K5QF-31WMD

A 16 GB DDR4 2133 MHz SODIMM module with CL15 latency and 1.2 V operation for laptop upgrades

  • Total capacity16 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Recommended forAMD & Intel Compatible
  • Boost multitasking capacity with a single 16GB DDR4 module
  • Speed up data handling at 2133MHz PC4-17000 rating
  • Reduce power draw using standard 1.20V DDR4 voltage
  • Fit any 260-pin laptop slot with SO-DIMM form factor
  • Verified compatible replacement for Kingston KCP421SD8/16 and KVR21S15D8/16

16GB DDR4 2133MHz SODIMM for laptops

This 16GB DDR4 module runs at 2133MHz with CL15 latency and 1.20V operation. It fits 260-pin SO-DIMM slots in compatible notebooks and all-in-one systems. The unbuffered, non-ECC design suits mainstream consumer platforms. Buyers who need ECC or registered memory should look elsewhere.

Major-brand chips and lifetime support

The module uses major-brand DRAM components tested to A-Tech quality standards. US-based technical support is available before and after purchase. A lifetime warranty covers the product. No additional software, cables or accessories are included in the package.

DDR4 2133 speed and SO-DIMM form factor

The DDR4 2133 interface caps bandwidth at PC4-17000 rates, so systems that support higher DDR4 speeds will run this module at 2133MHz. The 260-pin SO-DIMM form factor prevents use in desktop DIMM slots. Laptops limited to lower maximum memory speeds will downclock the module automatically.

How it compares

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

Price $73.99
Typical for this category: the median of 2,079 items is $70.99.
Total capacity 16 GB
Typical for this category: the median of 1,886 items is 16 GB.
Price per GB $4.62 per GB
Cheaper than about 73% 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 capacity16 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

Will the 16GB DDR4 module need any maintenance or replacement later?

The module has no moving parts and runs at standard 1.20V, so it requires no routine maintenance; replacement is only needed if a fault develops or you decide to increase capacity.

What limit appears first when the 2133MHz CL15 SODIMM runs sustained workloads?

The CL15 latency at 2133MHz sets the bandwidth ceiling, so memory throughput saturates before thermal or power limits are reached.

How much heat and power does the 260-pin 1.20V stick produce during all-day use?

At 1.20V the module draws minimal power and generates little heat, staying well within normal laptop thermal envelopes for continuous operation.

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