2.0 Dothan Worth it?
I went with the 1.7 for a couple reasons. Right now it seems to be the best compromise between price and performance, in terms of price jumps (from 725 to 735, 735 to 745, etc.) on different machines (I know PCTorque isn't offering the 715 or 725 on th 3790, but I've done a lot of configurating over the past couple weeks and this is based on many different sites).
In addition, many people have noted that the extra speed boost provides a negligible real-world increase due to other unavoidable bottlenecks (i.e. HDD, GPU) in the system.
Finally, for me, was the fact that the CPU would be an upgrade I would consider when prices come down (as we know they eventually will), and getting the 2.0 gives me little room to upgrade