Quote Originally Posted by Roger_D25 View Post
MikeMK your not the only one not able to boot on either 266/1066 or 333/1066, I just get the "C1" error. In fact every set of dividers except 266/800 and 333/800 give me either "C1" or poor performance/reliability? Like you said though this is not a major problem just an annoyance.
Hey Roger - yep, im exactly the same. I knew the 1066 dividers were a bit dodgy, but not the 667 ones. In fact, if you look at the anandtech review it states 266/667 as one of the recommended ones - not for me! C1 straight away.

Quote Originally Posted by cantankerous View Post
I cant use the 1066 dividers either, even up to the very latest bios without C1 errors. For me the 266/667 boots fine but is hard to keep stable under stress. I constantly find the 333/800 strap the easiest to work with in terms of maintaining stability while I continue to push the system higher in speed.
That confirms my findings too -333/800 is the easiest to work with. 266/800 works fine for me until around 3.3ghz, but then my mem cant take the overall memspeed.

Quote Originally Posted by pumbertot View Post
got it flashed to latest BIOS and now boots fine with QX9650 but having huge problems getting any sort of decent clocks stable and this Yorkie is a known good clocker so a bit disappointing so far though im going to start from the ground up with everything at stock and change a few things at a time in case its going to require totally different settings to the QX6850(which it seems it is).
Thats interesting - and a little worrying! I was consdiering jumping on a QX9650 within the next few weeks. Might wait and see a few more results on this board first. Keep us posted!