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

A-Tech

A-Tech 4GB DDR4 2133 CL15 HP P1N51AA P1N51AT Desktop RAM

SKU CH-GWDC-0D6AW

4 GB DDR4 2133 CL15 unbuffered DIMM for HP P1N51AA and P1N51AT desktops

  • Total capacity4 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetMajor Brand Chips
  • CAS latencyCL15
  • Tested speed2133
  • Rated voltage1.2 V
  • Boosts system responsiveness with 4 GB DDR4 2133 MHz module
  • CL15 latency and 1.2 V operation for efficient desktop performance
  • 288-pin DIMM fits standard HP P1N51AA and P1N51AT slots
  • Non-ECC unbuffered design ensures reliable everyday computing
  • Rigorously tested with major-brand chips for dependable operation

4GB DDR4 2133 Desktop Module

This A-Tech module delivers 4GB of DDR4 memory at 2133MHz with CL15 latency. It uses a standard 288-pin DIMM form factor and operates at 1.20V. The unbuffered, non-ECC design suits typical desktop platforms.

Suitable for HP P1N51AA and P1N51AT systems

Owners of compatible HP desktops can use this as a direct replacement or capacity upgrade. Systems requiring ECC, registered modules, or speeds above 2133MHz should select a different specification.

Steady operation at rated frequency

The module runs at its tested 2133MHz speed under continuous workloads. Standard 1.20V DDR4 voltage and unbuffered topology maintain stable signalling during extended multitasking or background tasks.

How it compares

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

Price $32.99
Cheaper than about 77% 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 $8.25 per GB
Pricier than about 60% of the 3,251 comparable items (median $6.75 per GB).

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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 module fit a desktop that requires DDR4 2133 CL15 unbuffered DIMMs?

Yes, it is a 288-pin DDR4 DIMM rated at 2133 MHz with CL15 latency and 1.20 V unbuffered operation, matching those specifications.

Is this memory compatible with the HP part numbers P1N51AA and P1N51AT?

The module is listed as a compatible equivalent for both HP P1N51AA and P1N51AT part numbers.

Can I install this alongside existing DDR4 memory running at 1.2 V?

Yes, it operates at the standard DDR4 voltage of 1.2 V and uses unbuffered non-ECC chips, so it will work with other 1.2 V DDR4 modules.

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