(In reply to comment #136)
> Alright, I have tested Uber Mode and it doesn't improve performance, at
> least not visibly. That's not the biggest problem. Uber Mode makes the card
> very unstable. I'm getting random geometry corruption and hangs with it. If
> I test a game, it usually doesn't survive 2 minutes of playing. The only
> other difference I see is that the maximum shader clock changed from 80000
> to 85000 (KHz?). Anyway, the clocks seem too low. I think this card should
> be able to reach 1 GHz. It's also pretty cold - it only has 50 °C.

80000 is 800Mhz.  The driver stores clocks in 10khz units.