@darth No, if there is any difference in performance it will only be in the emulationstation not in the games, because you are decreasing the vram only of the emulationstation, just to spare more for the emulators. I did this and for me it only performed better. But if you do and do not like the result, just do the reverse process, it is not irreversible, are simple steps to do or undo, dont need to be afraid.

@abunille Will do! Thanks!

@niculinux not sure to understand your question... You've mounted your SD card on a linux computer ? Just use sudo...