What a DMA cheat is and how it works in Tarkov
DMA stands for direct memory access. The card sits in a PCIe slot of a second computer, runs a cable to the gaming one, and reads its RAM past the CPU and past the operating system. The gaming PC never learns about it: as far as it can tell, there is a generic controller in the slot, the kind every motherboard already has several of.
All the math happens on the second box. That is also where the software runs, decoding raid coordinates and drawing them on its own screen. A classic internal cheat has to inject into the game process and leaves traces in memory. Here there is nothing to trace, because nothing was ever launched next to the game.
That is also the main limitation of the scheme: on its own it cannot press anything. To make aim move the mouse, you add a separate piece of hardware — a Makcu or a KMBox — which Tarkov sees as a plain USB mouse. Without it, DMA stays a radar and a set of highlights, which for a lot of players is exactly the point.
