Re: I think that AMD could produce higher frequency X2s but I don't see any reason to do so at this time.
I don't. AMD just launched a 2.4GHz DC Opteron, and people are willing to pay thousands for those. This tells me that 2.4GHz desktop parts were really skimming the top bin in ultra-low quantities.
Re: It's hard enough trying to get consumers to cough up a grand for the 4800
AMD had to price them at $1000 just to lower demand enough that they could supply them.