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Green circuit board with gold contacts and black memory chips

A-Tech

A-Tech 8GB DDR4 2133MHz CL15 Desktop RAM for Kingston HX421C14FB/8 KCP421ND8/8 KVR21N15/8

SKU CH-ZSHX-KAKWF

An 8 GB DDR4 desktop DIMM running at 2133 MHz with CL15 latency and 1.2 V operation, built with major-brand chips and tested for AMD and Intel platforms

  • Total capacity8 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetMajor Brand Chips
  • CAS latencyCL15
  • Tested speed2133
  • Rated voltage1.2 V
  • 8GB capacity lets you multitask smoothly with a single DDR4 module
  • 2133 MHz speed delivers responsive data transfers for everyday workloads
  • CL15 latency keeps timing tight for stable desktop operation
  • 20V standard voltage reduces power draw while maintaining compatibility
  • 288-pin DIMM form factor fits standard desktop memory slots

8GB DDR4 2133MHz desktop memory

This A-Tech module adds 8GB of DDR4 memory to a desktop system. It is built as a direct replacement for several Kingston part numbers including HX421C14FB/8 and KVR21N15/8. The stick uses a standard 288-pin DIMM form factor and runs at 1.20V.

DDR4 2133 PC4-17000 practical limits

The DDR4 2133 standard tops out at 2133 MT/s with a PC4-17000 bandwidth ceiling. This module operates at CL15 latency and 1.2V, so it cannot exceed the JEDEC base specification for this speed grade. Systems that only support lower DDR4 speeds will downclock the module automatically.

Upgrade from 4GB or 8GB CL16 modules

Replacing a single 4GB stick or a slower CL16 8GB module with this CL15 8GB unit raises total capacity and tightens latency. The jump is worthwhile when the motherboard and CPU memory controller both support DDR4 2133 at CL15, letting the system run at the rated timings without manual tuning.

How it compares

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

Price $48.99
Cheaper than about 66% of the 3,647 comparable items (median $90.99).
Total capacity 8 GB
Lower than about 60% of the 3,251 comparable items (median 16 GB).
Price per GB $6.12 per GB
Cheaper than about 57% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameA-Tech
Total capacity8 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

Should I choose the single 8GB stick or a 2x8GB kit for my desktop?

This listing is a single 8GB module; order two if your board supports dual-channel and you want 16GB total.

What does the 2133MHz speed actually deliver in everyday use?

It runs at the standard DDR4 2133 MT/s data rate, giving a peak bandwidth of 17 GB/s for typical desktop workloads.

Does the DDR4 288-pin interface limit the module to 2133MHz?

The 288-pin DIMM socket accepts faster DDR4 speeds, but this module is rated and tested at 2133MHz CL15.

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