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Green rectangular DDR4 DIMM module with 288 gold pins and black memory chips, no heat spreader

A-Tech

A-Tech 16GB DDR4 2933 Desktop RAM for HP L89421-001

SKU CH-43JX-G8RZX

A 16 GB DDR4 2933 desktop DIMM with CL21 latency and 1.2 V operation, built as a direct replacement for HP L89421-001

  • Capacity16GB
  • SpeedDDR4 2933 (PC4 23400)
  • Tested Frequency2933
  • CAS LatencyCL21
  • Voltage1.20V
  • ECCNo
  • 16GB capacity lets you run more applications at once
  • DDR4 2933MHz speed delivers fast data transfer rates
  • CL21 CAS latency provides responsive memory access
  • 2V operation reduces power consumption
  • 288-pin DIMM fits standard desktop memory slots

Compatible Replacement for HP L89421-001

This 16GB DDR4 2933 module is a direct replacement for the HP L89421-001 part number. It targets desktop owners who need to restore or expand memory capacity in that specific platform. The single 1x16GB DIMM uses a standard 288-pin unbuffered non-ECC design at 1.20V. Builders who want more storage or a different form factor should look elsewhere.

Simple DIMM Installation

Installation follows the usual desktop DIMM routine: power down, open the case, align the notch on the 288-pin module with the slot key, and press until the retention clips click. The 1.20V operation matches the DDR4 standard so no voltage adjustment is required. Problems usually arise when the motherboard firmware does not recognise the 2933 speed or when the 2Rx8 organisation exceeds the board's rank limit per channel.

Steady 2933 Operation

Under sustained load the module runs at its tested 2933 frequency with CL21 timings and 1.20V. The absence of a heat spreader means thermals rely on case airflow, but the low standard voltage keeps heat output modest during long sessions. Non-ECC unbuffered chips provide consistent throughput for typical desktop workloads without the overhead of error correction.

Highlights

  • 16GB capacity lets you run more applications at once
  • DDR4 2933MHz speed delivers fast data transfer rates
  • CL21 CAS latency provides responsive memory access
  • 2V operation reduces power consumption
  • 288-pin DIMM fits standard desktop memory slots

Specifications

BrandA-Tech
SeriesCompatible Replacement for HP
ModelL89421-001
Capacity16GB
SpeedDDR4 2933 (PC4 23400)
Tested Frequency2933
CAS LatencyCL21
Voltage1.20V
ECCNo
Buffered/RegisteredUnbuffered
ChipsetMajor Brand Chipset
Heat SpreaderNo
FeaturesL89421-001
Recommend UseCompatible Replacement for HP L89421-001

Questions about this item

Will this module fit the DIMM slots in my HP desktop?

The module uses the standard 288-pin DDR4 DIMM form factor that matches the slot specification for the HP L89421-001 part number.

Is the memory speed supported by my system's memory controller?

The kit runs at 2933 MHz (PC4-23400) with CL21 latency at the standard 1.20 V DDR4 voltage.

Can I add this stick alongside the existing memory in my PC?

Yes, it is an unbuffered non-ECC UDIMM, so it will work in any consumer desktop board that accepts DDR4 2933 modules.

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