|On my main Win7 box, "Total Available Graphics Memory" is something like 3.95GB. My video cards don't have anywhere near that amount of dedicated VRAM. I'm not sure about XP, but I believe that the Vista and 7 display driver models use system memory and dedicated VRAM as "video memory" all at the same time. |
Your XP box is probably doing the same thing...unless you're actually running out of video memory.
I think it's safe to say that if you aren't experiencing frequent drops to 1-5 fps, you are not running out of VRAM.
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