.hahahahah..I didnt know that my old crappy nVidia 5600FX is soo 'powerful' :)
And those benchmarks were from 2004, so it doesn't even include any of the cards released over the last two years. Meaning that it's even worse now, by comparison...
But seriously, Tom's Hardware has those massive video card benchmarks every year, and they can be a great help picking out a new video card.
Especially when you have several versions of a single card it can be hard to see which gives you the best price/performance return... 9600, 9600 XT, 9600 Pro. Is an XT better or worse than a Pro? Slightly faster according to the graphs, but you can't tell by name alone.