So, 30.2 is not enough?
Mine go to 32 - but the hashrate wouldn't be my concern with an Anorak VBIOS. My concern would be the fact that his "power saving" shit does NOTHING on linux.
Maybe it can go 32 but you wouldn't be killing it on those mhz in 24h mining, wouldn't you?
Shit, I've gotten my XFX ref 480 above 33MH/s (but I didn't run it for more than a few hours - too much power use to be worth it 24/7.)
So... yeah, it can do 32, and rock solid stable, 24/7.