2d only buffer cache

[Omnis Moriar]

how to tune up a buffer cache ?? What mean option buffer cache in xorg ??
Is this a buffer for system without buffer for opengl ?? Or i should write
"512" if i got a 1GB DDR3 r7 240 ASUS . Write everything about buffer cache
. Write all about most tweakly options in xorg ...WHAT IS PAGE FLIP AND
WHAT IS THE CORRECT OPTION FOR BUFFER CACHE AND OTHER OPTIONS FOR 2D ONLY ?
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