well now that i think about it, i dont think it will matter what your speed is really, so many ppl are going to be downloading it all at once when its release, sonot much Bandwidth is going to be avalible fo everyone to get max potential from there connecting (ex: My DSL going over 100 kb/sec) so everyones gonna probably have around 10-15 kb/sec max.
Unless of course a server has wicked good bandwidth...