Download Mats Rar -

If testing a card with no display output, use an integrated GPU or secondary card and specify the target index: ./mats -n 1 -e 50 .

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

(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 If testing a card with no display output,

Most versions are hosted on community repair forums like Repair.Wiki or specialized hardware subreddits like r/GPURepair . It is often bundled with MODS (Modular Diagnostic

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

It reports errors by channel (e.g., A0, B1), allowing technicians to know which chip to de-solder and replace.