VRAM Test
This VRAM test fills video memory with textures and watches for slowdowns. It works as a quick GPU memory test in your browser.
VRAM Capacity Probe
This canvas shows the animated graphics workload used to stress the GPU. It is decorative; results are listed in the metrics below.
- FPS
- –
- 1% LOW
- –
- FRAME TIME
- –
- SCORE
- –
- TIME
- 0:00
- LOAD
- –
- ERRORS
- 0
Before you start
GPU stress tests can significantly increase GPU load, temperature, power draw and fan speed.
Stop the test if your system becomes unstable, overheats, crashes or behaves unexpectedly. Do not run extreme tests on hardware with known cooling problems. This website cannot guarantee hardware safety.
This is a deliberately punishing test. It can push your GPU to its thermal and power limits for minutes.
- Laptops: plug in the charger and make sure the vents are clear.
- Make sure your GPU is cooled properly. Do not run this with known fan or cooling problems.
- Save your work and close other important tabs. A weak or overheated GPU can make the screen flicker or the graphics driver reset, which may close apps.
- You can stop at any time with the Stop button or the Escape key. The test also stops itself if frames take more than two seconds.
Long run: this test keeps the GPU busy for five minutes or more, so your computer will get warm. Laptops should be plugged in. You can stop at any time with the Stop button.
About this tool
What the probe does
The test allocates progressively larger textures and measures performance as memory fills. A sharp drop suggests the GPU ran out of fast memory and began swapping with system memory.
What it cannot do
Browsers cap memory use, so this is a capacity indicator, not a full memory diagnostic. For deep error checking use a dedicated memory tester on your desktop.
How to read the results
A smooth run means the card kept up as memory filled. A sharp slowdown part-way through suggests the working set no longer fits in fast video memory. The browser cannot report exact VRAM, so treat the result as a capacity hint.
If the test crashes
A crash or artefacts usually mean the GPU ran out of memory or the memory is unstable. Lower the settings and see the GPU health check.
Frequently asked questions
How much VRAM do I have?
The browser does not expose exact VRAM, so the probe estimates usable capacity from how the GPU behaves.
Can this find faulty memory?
It can reveal artefacts and instability, but it cannot confirm hardware faults.
Does the test show how much VRAM I have?
No. Browsers do not expose exact video memory. The probe only shows the point where performance changes.
Why did my browser tab crash?
Running out of memory can make the browser drop the graphics context. Lower the settings and try again; a crash on a card with plenty of memory can point to a driver problem.
Share feedback about this tool
Did it work for you? Tell us your GPU or device, your browser and what you saw. Your email address is never shown.