My computer is going to have the AMD64 3200+ and a 6800GT, so it's going to use up a fair bit of power. How much do I need? Here are the choices I have: - buy case supplied with a 400w power supply (I like this as it has the best features and is quite cheap). Deluxe X-Blade Case (http://www.pccasegear.com.au/prod1393.htm) - buy a case with 430w power supply (Case doesn't really appeal to me, as it doesn't have many features) Antec Performance Plus 1080AMG http://www.pccasegear.com.au/prod480.htm) - buy a case case without PSU (Xaser III VM2000A Lanfire or GMC X-21 Trinity) and give it a 500w generic power supply. - buy a cheap case and give it a good power supply.