That is absolutely not true. Both Diablo and I have spent an awful lot of time optimising for this SDK and still are doing so.
I did not mean to offend you or diablo, as you say you guys are actually still optimizing with new SDK which is awesome. I just see a lot of people sticking with older SDK because they assume it's slower
Nobody is assuming anything. IT IS SLOWER at lower memclock. The people who have developed on it will even tell you the same thing.