GPU makes dead pixles on P-6831FX

Randomly when looking at graphics card intensive media like movies/games my screen gets a square of red dots about 1 x 1 inch. The whole square isn't red but about 25% of the pixels within that square are red. It doesn't seem to be the monitor doing it as the square moves around and shows up more when the graphics card is working hard on something. It shows up with any of the drivers I use, even third party like Doc's. Anyone else encounter this problem? Any ideas would be appreciated.

 

Is your GPU overclocked? And are you checking the temperatures?

I doubt it's making dead pixels, but if there is something wrong with your GPU than it can cause anomalies like that.

 

I don't overclock any and it happens even when temps are at a comfortable 50C on the GPU, albeit less often then when it's cool. Heat does seem to be a likely culprit, but since heat only goes up when the GPU is working hard it's tough to isolate the problem to one factor. I'm curious if it could be bad memory on my card. Does anyone know if a graphics card always uses all 512 of its memory all the time or does it throttle down at times?

 

It uses as much as whatever it needs... it's just like RAM, but it's RAM on the video card reserved specifically for the video card.