You must create a bootable USB using a tool like Rufus or Etcher and a MATS/MODS disk image (.img).

While it supports a wide range of architectures (from the 900 series up to modern RTX 40 and 50 series), it is exclusive to NVIDIA hardware and does not work on AMD cards. How to Use MATS

After the test, the tool generates a report.txt file. Look for "Write Errors" or "Read Errors" assigned to specific memory banks (A, B, C, etc.). Finding the "MATS.rar" Download

Most versions are hosted on community repair forums like Repair.Wiki or specialized hardware subreddits like r/GPURepair .

NVIDIA does not officially distribute MATS to the public; it is a "leaked" tool.

The system must be booted in Legacy/CSM mode , as the tool often fails to run in UEFI mode. Command Execution: To run a basic memory test of 20MB: ./mats -e 20 .

Because these files come from unofficial third-party sources, always scan downloads for malware and ensure you are comfortable using command-line tools before proceeding.

MATS specifically targets the Video RAM (VRAM) of NVIDIA GPUs. When a graphics card shows artifacts, crashes under load, or fails to output a signal, MATS can pinpoint exactly which physical memory chip is failing.