Have your say on Gentoox Home v3.1. Visit this poll.

Go do some research on this yourselves then cast your votes.

-O3 is only really good for mathematically intensive programmes, such as programs that need to perform complex calculations. -Os will make smaller binaries and use less RAM, thus load quicker (which is kind of what the Xbox needs, in my opinion). And -O2 is somewhere in the middle.

Note that if I find some extra definitive information on which would be best to use in Gentoox, I will override the results of the poll.