I just got my SK-6 last night with the delta fan from newegg.
Upon installation with ASII, I noticed that the temps were only 2C lower at 57-58C for the cpu. I put my hand over the fan and noticed it was blowing outward from the mb. The sticker of the fan was up, that's why I put it on that way. I flipped the fan around so it could blow downwards to the heatsink and my temps dropped about 8C vs the retail h/s+fan.