Re: graphic memory
as far as i know, the graphics memory has nothing to do with the settings on games other than running smoother on higher resolutions.
like if you got a cheap graphics card that has 1gb of memory, a better graphics card with 256mb will run with better settings and FPS.
The thing to look for are the specs in the graphics like stream processors, memory clock, core clock, etc.
i dont know that settings are needed for the games you are planning to play though.
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