You must create a bootable USB using a tool like Rufus or Etcher and a MATS/MODS disk image (.img).
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
(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 Download MATS rar
Most versions are hosted on community repair forums like Repair.Wiki or specialized hardware subreddits like r/GPURepair .
The tool typically runs in a minimal Linux environment booted from a USB drive. You must create a bootable USB using a
It reports errors by channel (e.g., A0, B1), allowing technicians to know which chip to de-solder and replace.
Common versions found online include 367.38.1 (for older cards like Pascal) and 400.184 or newer (for RTX/Turing and Ampere cards). Finding the "MATS
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 .