I was thinking about buying a new PSU for my system but I don't know if it is really necessary. I already have a 520w dual +12v rail PSU but my new 7800GS OC isn't putting out ANY video so I thought about upgrading to a 600w PSU would fix the problem. Here is a list of things the PSU must power: AMD Athlon XP 3200+ CPU AU31 K7M-NF18G (nForce2) mobo (2x) 1024MB DDR SDRAM gaming sticks GeForce 7800GS OC 256MB (AGP 8x) Creative Audigy4 PRO sound card WD 120GB hard drive WD 320GB hard drive DVD drive CD drive Floppy drive My 7800GS requires a minimum of "400w with a +12v current rating of 20A or more" to operate. I don't know the rating on my current PSU. Does anyone think a new PSU would do the trick?