Originally posted by Sw1tCh[FX]
but since i have 512MB, would i get better performance if i leave it on?
if your video card has at least 128mb, and your system has 512mb it's actually better to have it OFF, so your card can take most of the stress, instead of the whole system trying to run it....
people tend to leave fast writes ON only if the rest of their system doesn't have enough "juice" or low memory on thier vid-card to run an intense game.
you should be fine to leave your fast writes OFF. it's more of a memory allocation issue than actual 3d video process.