Hi Sun --
That would indeed be good if that's the end of the 660 snags. Sometimes just takes perseverance and dogged determination. the good help we get in here helps too. Good spot on the p/s outlets btw.
Shaders are matched up 2:1 to cores on recent cards. Adjust cores if you're sure there's no choice to do so for shaders. Now the fun part for you begins, I loooooove o/c'ing. Go at it with the clock speeds alone would be my advice, then when you start crashing it, up the voltage a tad if you have that option. It's pretty well by guess or by golly filtered by common sense deal, so have fun! Watch your temps as you're going, having a stable o/c at 85 degrees celsius in the middle of winter will not treat you well six months from now. 85 is too hot anyway, the card might fold ok but you're shortening its life. Oh that's the other thing you can likely adjust or at least watch, card fan speed.
2.22 is not a choice anymore, but good memory.
Yes, 250 folding in Knight Rider I mean Kitt is a natural.