Question 1

What is a VRAM test and why should I run one?

Accepted Answer

A VRAM test checks the video memory (VRAM) on your graphics card for errors and stability. Faulty or unstable GPU memory can cause artifacts, crashes, black screens and game freezes. Running a free online VRAM test helps you confirm whether your NVIDIA, AMD or Intel GPU memory is healthy before gaming, mining, rendering or after applying a memory overclock.

Question 2

Is this free online VRAM test really free with no download?

Accepted Answer

Yes. The VRAM test on vramtest.com is completely free to use, requires no account and no download. It runs directly in your browser using WebGL, so you can check your video memory for errors in seconds on almost any device — Windows, Mac or Linux.

Question 3

How does a browser-based VRAM test work?

Accepted Answer

The tool allocates blocks of GPU memory as textures, writes a known data pattern into each block and then reads it back to verify the bytes match. If the data that comes back is different from what was written, that block is flagged as a memory error. It also measures how much VRAM your browser can safely allocate.

Question 4

Can a browser VRAM test detect every hardware fault?

Accepted Answer

A browser-based test is great for a fast, convenient first check, but it runs inside the browser sandbox and cannot access 100% of your VRAM the way a native tool can. For exhaustive validation of every memory cell, dedicated native utilities such as memtest_vulkan are recommended. Use our online test for quick checks and triage.

Question 5

How much VRAM does my graphics card have?

Accepted Answer

Browsers do not expose the exact VRAM size for privacy reasons, but our test reports your detected GPU and how many megabytes it could successfully allocate. That allocated figure is a practical, real-world indicator of the video memory available to applications on your system.

Question 6

I found VRAM errors — how do I fix GPU memory errors?

Accepted Answer

First, reset any GPU memory overclock to stock speeds and run the test again. If errors persist at stock, lower your memory clock, improve case cooling, update your graphics drivers, and reseat the card. Repeated errors at stock settings can indicate failing VRAM and may require warranty service.

Question 7

Does the VRAM test work on NVIDIA, AMD and Intel GPUs?

Accepted Answer

Yes. Because the test runs on WebGL through your browser, it works on any graphics card with working WebGL drivers — including NVIDIA GeForce, AMD Radeon and Intel Arc GPUs. For the most reliable results, update to the latest graphics drivers and use a desktop browser such as Chrome, Edge or Firefox.

Question 8

How long does a VRAM stress test take?

Accepted Answer

A standard check completes in a few seconds to a couple of minutes depending on how much video memory you choose to test. For detecting heat-related faults, we recommend running the VRAM stress test more than once after the card has warmed up under load.

VRAM Test FAQ: How to Test GPU Memory for Errors