Source : 3Dchips.fr (in French)
During the introduction of the Geforce 6800, we noticed that this board needed not one, but two (2) Molex connections (which are what hard drives typically use for the power connection).The reason is quite simple : this sucker fests on electricity. Nvidia first recommended to have a 480W PSU to make in run safely. After a less than lukewarm welcome of this "feature", Nvidia noted that a good non-overclocked system equipped with a 350W PSU would suffice.
In any case, if Apple hasn't decided to go with either ATI or Nvidia, we would prefer if they chose the first.
The X800 are better performers, draw much less power, hence are likely to be more quiet and easier to cool than a Geforce 6800.
