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Complete DMA Workflow

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Direct Memory Access (DMA)

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Overview

Direct Memory Access (DMA) is a high-level cheating method used in video games that is particularly difficult to detect. This guide explains what DMA is, how it works, and requirements for using it.

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What is DMA?

DMA is a feature that allows hardware to access system memory directly, bypassing the CPU. Since DMA operates at the hardware level outside normal OS operations, it can manipulate game data without detection by traditional anti-cheat systems that monitor software behavior.

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How it Works

DMA uses a small board (approximately palm-sized) that fits into a PCIe slot, similar to a graphics card slot. This board connects via data cable to a second computer.
Credit: Ufrisk - Original Creator of PciLeech
DMA System Diagram
Here’s what a DMA board looks like - it’s very thin and will generally fit in any extra PCIe slot:
DMA Board
If your graphics card blocks remaining PCIe slots, you may need to purchase a PCIe extender.

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System Requirements

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Checking DMA Compatibility

To determine if your motherboard supports DMA:
  1. Press WIN+R and type msinfo32.exe
  2. Look for “Kernel DMA Protection” in the system information
  3. If it shows OFF, your motherboard supports DMA
Kernel DMA Protection Check
If Kernel DMA Protection shows as ON, you’ll need to disable it in your BIOS settings. Note that some motherboards (like certain Gigabyte models) cannot disable this feature and therefore don’t support DMA.

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Primary Computer Requirements

DMA requires two computers to function. For the Gaming PC:

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Desktop Requirements

  • Available PCIe slot (x16, x4, or x1)
  • PCIe extender if slots are blocked by GPU
  • Sufficient performance to run games smoothly
Must have one of:
  • Extra M.2 slot (for M.2 to PCIe converter)
  • Extra M.2 slot (for M.2 version DMA)
  • Thunderbolt 3 port (for Thunderbolt to PCIe converter)
External PSU may be needed to power DMA when using M.2 conversion

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Second Computer Requirements

The second computer can be either desktop or laptop with: Minimum Specs:
  • CPU: Intel i5 4th gen or better
  • GPU: Integrated or Dedicated Graphic Card
Recommended Specs:
  • CPU: Intel i5 9th gen / Ryzen 5600G or better
  • GPU: Integrated or Dedicated Graphic Card (Minimum support must be the same resolution as a Gaming PC)
For fuser usage, the secondary computer’s CPU/GPU must support output matching the main screen’s resolution. Consult our community for compatibility guidance.