What's interesting in the graph that HDCHOPPER posted (in the other thread about the same subject) is that the margin for error in GTL refs drops very close to 0 as you approach 1800Mhz fsb, but seems to bounce back up again after it... this tends to suggest this it would be very difficult to tune GTL refs to 1800Mhz but easier at slightly higher speeds
I cant get past 450 FSB on this QX with an 8x multi, If I up to 9 its a no go but maybe I should try 10 x 400 FSB and set all the GTL;s to +16? what do you think?