Intel is initiating a C0 to D0 stepping conversion for Core i7 920

[zlojack]

I would replace my C0/C1 920 only if most of the D0 920's can work stable @ 21x215 or if a D0 950 with the same price as 940 C0/C1 can do 24x215 stable.

"Stable" at over 5GHz?

Good luck with that one. I think your expectations are a little too high there.