Reviews say this is what the GTX 480 should have been:

http://www.overclockersclub.com/reviews/nvidia_gtx580/

It will be interesting to see how those 512 CUDA cores compare to the ATI cards for crunching. At around $580, they sure aren't cheap:

http://www.newegg.com/Product/Produc...TX+580&x=0&y=0