I am in the process of putting together a fast gaming rig. (AMD FX-55) I have never done any DC before but I figure that it would be a shame to let all this processing power just sit there when I am not gaming. As far as memory requirements are concerned, can a DC machine make use of more than 1G of memory. It seems that most gamers are sticking to 1Gb in two 512 sticks these days. Most games can't really utilize more. I wasn't sure about DCing. It wouldn't be that much more to go ahead and bump it up to 2Gb if it will get used. Also, is it possible to run multiple operations at the same time and will this affect memory usage? Finally with the release of Win Xp 64 change or improve anything as far as DC is concerned?