Sorry, but this is NOT a good way to benchmark your card. It will test it yes - but it will test it doing only thing.
It's like testing various cars, but only measuring the engine size. A big dirty old truck would beat a ferrari!
Trayloader got a score of 650 odd fps on a 2.8ghz imac. I just tested my work pc - it has the equivalent of a geforce 5700 card, and it scored 630. I know for a fact that the imac card is perhaps 10x faster than this one, as I use the same 3d apps on both and also have a 2.8ghz imac, and there is NO comparison. Stuff that barely manages 5fps on this geforce card at 640x480 runs happily at 30+fps on the imac at 1920x1200!
The score I got is also more than 2x faster than a radeon 9600 - unless you run very old software, the radeon is infact normally 2x faster than this, so the score is the wrong way round!
I think that either the application has a serious bug, and is making some cards appear much faster than they are and others much slower, or it's testing something that you wouldn't actually use in 'real' programs.
If you want to seriously know how the card performs, use something like 3d mark. That's made by professionals who know how to test these cards, and it tests the performance in lots of different ways. You'll find that the performance of the new imacs is actually pretty decent - nowhere near the speed of the current high end cards, but not bad at all.
