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Green rectangular DDR4 DIMM module with black memory chips and gold edge connectors, no heat spreader

A-Tech

A-Tech 8GB DDR4 2133MHz CL15 1.2V Desktop RAM

SKU CH-WMW4-PXRP0

8GB DDR4 2133MHz CL15 desktop module replaces Samsung M378A1K43BB1-CPBD0 with 1.2V unbuffered operation

  • Total capacity8 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetSamsung Chipset
  • CAS latencyCL15
  • Tested speed2133
  • Rated voltage1.2 V
  • Boosts multitasking with 8GB DDR4 capacity
  • Runs at 2133MHz CL15 for responsive performance
  • Operates at 1.20V standard DDR4 voltage
  • Unbuffered 288-pin DIMM fits desktop slots
  • Direct replacement for Samsung M378A1K43BB1-CPBD0

Capacity and Compatibility

This 8GB DDR4 module runs at 2133MHz with CL15 latency and 1.2V operation. It is built as a compatible replacement for the Samsung M378A1K43BB1-CPBD0 part number. The unbuffered, non-ECC DIMM targets desktop users who need a direct swap for that specific Samsung stick.

Form Factor and Testing

The stick uses a standard 288-pin DDR4 DIMM layout, noted as 262-pin in the supplier data, and carries Samsung chipset components. No heat spreader is fitted, keeping the profile low for tight slots. Every unit passes A-Tech quality assurance testing before it ships.

Installation and Common Issues

Installation follows the usual desktop DIMM procedure: align the notch, press until the latches click, and verify the system POSTs at 2133MHz. The most frequent issue is a motherboard that defaults to a lower speed or fails to train when the slot population changes. Checking the manual for supported frequencies and seating the module firmly resolves most problems.

How it compares

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

Price $45.99
Cheaper than about 68% 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 $5.75 per GB
Cheaper than about 62% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for Samsung
Model nameM378A1K43BB1-CPBD0
Total capacity8 GB
Performance
Rated speedDDR4 2133 (PC4 17000)
Processor
ChipsetSamsung Chipset
Memory
CAS latencyCL15
Tested speed2133
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forCompatible Replacement for Samsung M378A1K43BB1-CPBD0

Questions about this item

Will the module ever need a heat spreader added later?

No heat spreader is fitted and the 1.20V DDR4 design runs within JEDEC thermal limits, so no aftermarket cooling is required.

What caps sustained throughput first — the CL15 latency or the 2133 MT/s bus?

The 2133 MT/s data rate is the hard ceiling; CL15 only adds a few nanoseconds per access and does not limit peak bandwidth.

How much power does an 8 GB stick draw when the system runs all day?

At 1.20V the module typically draws 2–3 watts, producing minimal heat and negligible fan noise inside a desktop chassis.

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