Just out of interest i was reading up on psu units, as out of all the components of a pc is the one i know least about. Looking click here shows a table (second one for atx psu units) on how to calculate psu wattage using volts * amps for each rail.
My psu is labeled 350W with the following rail specs +5 30A +12 20A +3.3 14A -12 0.8A -5 0.5A +5 vsb 3A
Going by the calulation in the link this gives 240 + 150 +2.5 +9.6 +15 = 417W
Which one is most likely to be the more accurate reasoning, or is it a case of psu rated at 350W but can cope with 417W? Or have i made an error in calculation.
Also would like to point out that if this is not a good quality branded power supply and is the one supplied with a typical PC then it will probably struggle to supply even the 350 watts you say it is rated at.
All power supplies are not equal. Branded ones are far superior.