Hi I would like to know if there is a rule for setting this, I have it set at 1/4 the total system memory that is 128 Mb, I also would like to know if it is good to enable the AGP Fast Write feature, and the vertical sync for games that offer that option. By the way the computer is a Sempron 2200+ @ stock 1.5 Ghz 512 Mb DDR 333 xfx FX5200 128 Mb DDR 64 bit AGP 4x.
More aboutaperture size
apg aprgture size is usually set to the size of the memory of the gfx card. Enable fast write. dont know about v-sync. Guess the best way is to just try it out in a game and see what you like better