You aren't going to get an exact answer, as it isn't even out to the public yet. But, judging by reviews to date as well as the results of some of the guys on XS forums, if you get a B0 stepping chip...you should get between 3-3.5 with air cooling, although not likely stock cooling. You will need a good motherboard as well, though 300FSB shouldn't be a problem on most. It's all still conjecture at this point.what exactly would i need to overclock that to about 3-3.5 ghz?
A phase change cooler located outside your winter igloo in Antarctica.
It's safe to say you'll need at least good air cooling.
Good air to water cooling.
Remember, all I said "good" air cooling, not great, or awsome, or best available. I don't think watercooling will be needed though, unless you're going for like 4.5.