I'm thinking about buying an alluminum case because they look cool and it has two intake fans and one exhaust fan. Does anyone know if alluminum fans are really worth it? or are they stupid? Also, i have a athlon xp 1600, should i have a 350 watt psu or should i stick with my 300 watt psu. I have a lot of devices in my computer and I just need to know if there is a big difference in the two psu's.