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System Memory vs Video Memory?

Associate
Joined
15 Mar 2010
Posts
967
What's the difference? Sometimes my system memory will be lower than my video memory or vice versa, SC2 can get up to 2.5 GB of system memory and max out my VRAM but other games will use under 1 GB of system memory and max out on VRAM?

I heard when you run out of VRAM you're game just goes down to 1-3 FPS is this true? Bc apparently this is not the issue for me as I have a GTX 570 with 1280 MB of VRAM and I see it max out sometimes without my FPS going to such levels.

Does higher resolution/aa only affect VRAM and not system memory?

I game on a 2540x1440 screen and always use x4 or x8 AA fyi.
 
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