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

A-Tech

A-Tech 4GB DDR4 2933MHz CL21 Desktop RAM

SKU CH-0RM4-4J8BX

4GB DDR4 2933MHz CL21 desktop DIMM with 1.2V unbuffered Samsung chips for reliable system upgrades

  • Total capacity4 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetSamsung Chipset
  • CAS latencyCL21
  • Tested speed2933
  • Rated voltage1.2 V
  • 4GB capacity adds headroom for everyday multitasking
  • DDR4 2933MHz speed keeps data moving quickly
  • CL21 latency supports responsive system operation
  • 2V standard voltage reduces power draw
  • 288-pin DIMM fits compatible desktop motherboards

Desktop DDR4 upgrade for Samsung replacement

This 4GB DDR4 module runs at 2933MHz with CL21 timing and 1.20V operation. It is built as an unbuffered, non-ECC DIMM using Samsung chipset components. The stick serves as a direct replacement for the Samsung M378A5244CB0-CVF part number.

Fits standard DDR4 desktop slots without extra

The 288-pin DIMM installs in any desktop motherboard that accepts DDR4 memory at the rated speed. No heat spreader is included, so the module keeps a low profile inside compact cases. It frees up headroom for CPU coolers or additional sticks.

Replaces original Samsung DDR4 2933MHz CL21 modules

The upgrade is worthwhile when a system has a failed stick or needs extra capacity for multitasking. Matching the same frequency, voltage and latency preserves stability without BIOS changes. Verify the motherboard supports DDR4 2933 before purchase.

How it compares

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

Price $25.99
Cheaper than about 82% 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 $6.50 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
Product lineCompatible Replacement for Samsung
Model nameM378A5244CB0-CVF
Total capacity4 GB
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetSamsung Chipset
Memory
CAS latencyCL21
Tested speed2933
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forCompatible Replacement for Samsung M378A5244CB0-CVF

Questions about this item

Will this 4 GB DDR4 2933 MHz module fit my desktop's 288-pin DIMM slots?

Yes, the stick is a standard 288-pin unbuffered DIMM that plugs directly into any desktop DDR4 slot supporting 2933 MHz operation.

Does the CL21 latency and 1.20 V voltage match the Samsung M378A5244CB0-CVF spec so I can mix it with an existing stick?

The module is rated CL21 at 1.20 V, matching the listed Samsung part, so it will run at the same timings and voltage when installed alongside an identical stick.

My motherboard only supports non-ECC memory — is this module compatible?

The module is a non-ECC unbuffered DIMM, making it suitable for consumer desktop boards that require non-ECC memory.

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