Most versions are hosted on community repair forums like Repair.Wiki or specialized hardware subreddits like r/GPURepair .
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 .
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. Download MATS rar
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
NVIDIA does not officially distribute MATS to the public; it is a "leaked" tool. Most versions are hosted on community repair forums
You must create a bootable USB using a tool like Rufus or Etcher and a MATS/MODS disk image (.img).
(Memory Automated Test System) is a powerful, leaked internal diagnostic tool from NVIDIA used to identify faulty VRAM chips on graphics cards. It is often bundled with MODS (Modular Diagnostic Software), which performs broader GPU health checks. Core Functionality MATS specifically targets the Video RAM (VRAM) of
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