GTX 570 OCing

[BrutalGreen]

was thinking what OCing the Asus GTX570 DCII would be like?

1. how much control can I have over the voltage/whats a safe limit?
2. what would temps look like on stock cooling once OCed (the card hovers around 55C stock under furmark)
3. how effective would OCing the mem be? what are the limits there?
4. how much better than the ref. PCB is this other than the VRMs?
5. how much would the stock cooler suffer in a back to back SLI setup?
6. how easy would it be to bios flash OC? (to keep the same OC across different OSes)

Ofc I don't expect answers to all my questions but would be interested on what HWC thinks of these bad boys in general (weather you had the card since it launched or now is the first time you see it)...