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Green printed circuit board with black memory chips and gold edge connectors, no heat spreader

A-Tech

A-Tech 8GB DDR4 2933MHz CL21 Desktop RAM

SKU CH-M2XZ-YAF8D

An 8 GB DDR4 2933 MHz desktop memory module with CL21 latency and 1.20 V operation, built as a compatible replacement for the Hynix HMA81GU6DJR8N-WM

  • Total capacity8 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL21
  • Tested speed2933
  • Rated voltage1.2 V
  • 8GB capacity lets you run more applications simultaneously
  • 2933 MHz DDR4 speed reduces data-transfer bottlenecks
  • CL21 latency supports responsive system operation
  • 20 V standard voltage keeps power draw low
  • 288-pin DIMM form factor fits desktop memory slots

8GB DDR4 2933MHz CL21 Module

This A-Tech module provides 8GB of DDR4 memory at 2933MHz with CL21 latency. It is an unbuffered, non-ECC DIMM designed as a direct replacement for the Hynix HMA81GU6DJR8N-WM part. The stick runs at the standard 1.20V DDR4 voltage and uses major-brand chips.

Check motherboard DDR4 slot and speed support

Before ordering, confirm your desktop motherboard accepts DDR4 DIMMs and can run at 2933MHz (PC4-23400). Verify the board uses 288-pin slots, not the 262-pin SO-DIMM format used in laptops. Ensure the BIOS is set to the correct voltage profile for 1.20V operation.

Steady throughput at rated frequency

Under sustained workloads the module maintains its tested 2933MHz frequency and CL21 timings without throttling. The lack of a heat spreader means airflow across the PCB is beneficial during long rendering or compilation sessions. Quality assurance testing validates reliable operation at the rated voltage continuously.

How it compares

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

Price $46.99
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 $5.87 per GB
Cheaper than about 60% of the 3,251 comparable items (median $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 Hynix
Model nameHMA81GU6DJR8N-WM
Total capacity8 GB
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL21
Tested speed2933
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forCompatible Replacement for Hynix HMA81GU6DJR8N-WM

Questions about this item

What comes inside the A-Tech 8GB DDR4 2933MHz CL21 Desktop RAM package?

The package contains one 8GB DDR4 DIMM module with 288 pins, tested at 2933MHz CL21 and 1.20V. No heat spreader, cables, tools or additional sticks are included.

Should I choose the 8GB 2933MHz CL21 version or a different capacity or speed for my desktop?

Select this 8GB 2933MHz CL21 module when your board specifies DDR4 2933 (PC4-23400) non-ECC unbuffered memory. Match the exact speed, voltage and pin count to avoid boot issues.

How does the 2933MHz CL21 rating translate to real-world desktop performance?

At 2933MHz with CL21 latency and 1.20V, the module delivers the standard data rate and timing your motherboard expects for DDR4 2933 operation, giving stable throughput for everyday workloads.

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