From hkepc
QX9650 - 9x333=3000MHz- 2x6MB $999 Nov 11 07
Q9550 - 8.5x333=2833MHz - 2x6MB $530 Jan 08
Q9450 - 8x333=2667MHz - 2x6MB $316 Jan 08
Q9300 - 7.5x333=2500MHz - 2x3MB $266 Jan 08
E8500 - 9.5x333=3167MHz - 6MB $266 Jan 08
E8400 - 9x333=3000MHz - 6MB $183 Jan 08
E8300 - 8.5x333=2833MHz - 6MB ?? ??
E8200 - 8x333=2667MHz - 6MB $163 Jan 08
i grabbed this from another site to share here. i might pickup the Q9450 if i don't have a Q6600 yet.