Calmatory,
I'd say...
IF R600 was made on 65nm like the rest of HD2k series, it could have had 16RBE/32TMUs/640SPs and it would've easily competed/beaten G80. nV would have been forced to make the successor of G80 (that is, 65nm "G90") a real upgrade with more SPs than on G80, instead of a tweaked shrink of G80, aka. G92. Then both would've shrinked to 55nm just to decrease die sizes. Then a new round; R600's architectural successor could have been a 55nm 24ROP/56TMU/1120SP chip (320SP RV670 would never had existed!) to battle nV's 55nm 32ROP/64TMU/256SP "G100". Then shrink to 40nm -> ad nauseam.
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