Quote Originally Posted by xdan View Post
GTX 460 achieved high clocks because of the smaller die-size and because of the less tranzistor.
Combine this with the tweaked GF110 silicon and you will have even higher clocks.
GTX460 achieved clocks similar to GTX580 because GF104 already has most of the tweaks included in GF110. So any further increase is possible, but it'll be not as large as before.