"In low-level fill and texture filter tests, for instance, the iPhone 3GS's new GPU really comes into play. The 3GS got a score of 5.2 million triangles/sec in a linear texture filter test, for instance, where the iPhone and Nokia N95 both got between 555-600,000 triangles. "
http://www.extremetech.com/article2/0,2845,2349515,00.asp
http://www.extremetech.com/article2/0,2845,2349515,00.asp