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

A-Tech

A-Tech 4GB DDR4 2133MHz CL15 1.2V 288-Pin Desktop RAM

SKU CH-SBG3-TG5T8

4GB DDR4 2133MHz CL15 1.2V 288-pin desktop module upgrades system memory for faster loading and multitasking

  • Total capacity4 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetMajor Brand Chips
  • CAS latencyCL15
  • Tested speed2133
  • Rated voltage1.2 V
  • Boosts multitasking with 4GB DDR4 capacity
  • Runs at 2133MHz for responsive desktop performance
  • CL15 latency keeps data access snappy
  • 2V operation reduces power draw and heat
  • 288-pin DIMM fits standard desktop motherboards

Direct Kingston KVR21N15S6/4 Replacement

This A-Tech module matches the Kingston KVR21N15S6/4 specification exactly, delivering a 4GB DDR4 2133MHz CL15 DIMM at 1.2V. It installs in any desktop board that accepts a 288-pin unbuffered non-ECC stick.

Upgrade from lower capacity or slower DDR4

Adding this stick replaces a smaller module or a slower DDR4 DIMM, raising total memory and keeping the 2133MHz data rate. The jump is worth it when your system shows high memory usage during everyday multitasking or when the current stick limits the platform to a lower speed.

Suits budget desktop builds and simple repairs

The single 4GB rank works well for office PCs, home servers, or older platforms that only support 2133MHz DDR4. Builders needing higher frequencies, lower latencies, ECC, or larger capacities should look at other modules.

How it compares

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

Price $27.99
Cheaper than about 80% of the 3,647 comparable items (median $90.99).
Total capacity 4 GB
Lower than about 80% of the 3,251 comparable items (median 16 GB).
Price per GB $7.00 per GB
Typical for this category: the median of 3,251 items is $6.75 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
Performance
Rated speedDDR4 2133 (PC4 17000)
Processor
ChipsetMajor Brand Chips
Memory
CAS latencyCL15
Tested speed2133
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.2 V
Compatibility
Recommended forAMD & Intel Compatible

Questions about this item

Will this 4 GB DDR4 2133 MHz module fit a standard 288-pin desktop DIMM slot?

Yes, it is a 288-pin unbuffered DIMM designed for regular desktop memory slots.

Can I use this stick alongside existing DDR4 modules running at a different speed or latency?

The system will run all modules at the lowest common speed and highest latency; match 2133 MHz CL15 for best stability.

Does the 1.2 V operating voltage require any special BIOS setting or cooling?

No, 1.2 V is the standard DDR4 voltage and works at default BIOS settings without extra cooling.

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