First of all a 10 percent increase is quite a sizable increase in performance. Remember you are only upgrading one part of the whole system and the 10 percent increase applies to the whole system. the later is just speculation as to the palomino...... Remember when Intel released p3 with rambus and it showed no noticable increase in performance until rambus was coupled with the p4? this was do to the fact that the p3 could not utilize the increased bandwith of rambus. Many are speculating that the same will happen with the palomino and DDR.
A little bit of knowledge is a dangerous thing!