The 675mx vs 680mx performance benchmarks are closer than you might think! Check it out...
http://www.barefeats.com/wst10gx.html
http://www.barefeats.com/imac12g6.html
very close indeed...
http://www.barefeats.com/wst10gx.html
http://www.barefeats.com/imac12g6.html
very close indeed...