In Tom's energy comparison of the 9600gt 512 and the 9600gt 1gig cards they state the 512 card uses much more electricity (see link). Does anyone know why or even if this true?
http://www.tomshardware.com/reviews/geforce-radeon-power,2122-4.html
http://www.tomshardware.com/reviews/geforce-radeon-power,2122-4.html