How can I test my GPU memory/RAM?

Question

I run MemTest86 a lot at work on customer's machines, and it's great for troubleshooting memory issues. My question is, how can I test that a GPU is starting to go?

I know of programs like 3DMark to push the graphics card to its limits, but what about with Video Memory? Is it worth testing? Is there a stress tool actually able to catch issues in the video card (memory), perhaps using CUDA/OpenCL?

Solution

GPU stress tests are generally designed to attempt to overheat the GPU. Depending on the particular test, this might or might not use the entire video memory or check its integrity at some point.

Video Memory stress Test is specifically designed for this purpose, and it's quite similar to MemTest86+. You can test the memory using DirectX, CUDA or OpenGL.

The downloadable zip contains VMT (for Windows) and VMTCE (Clean Environment, bootable ISO). There's also a floppy version.

Screenshots

Comments

[math]

There is also sourceforge.net/projects/cudagpumemtest which I use under Ubuntu 12.04

[Dennis]

@Hooch: Did you try different test types? I'd expect DirectX and/or CUDA to work. If neither does, you should ask a new question.

[MattPark]

Seems like this limits out at 2GB video memory... or is my card messed up?

[djsmiley2kStaysInside]

One of the few times a software-rec comes good, congratz.