I think I remember some people saying that 950MHz causes problems for them, even when higher freqs work fine for them (when they add 950 to avoided freqs, or increase volts for it).

Mine doesn't work at 950 either, but it's stable at ideal profile, and seems to also work with starving profile @900 (have been trying that a few days now, no strange stuff so far). Haven't tried disabling 950 and going over that, 900 is quite enough for me.