Im still thinking its the 450fsb on the quad causing the issues rather than the RAM having problems.

I have read alot regarding the high fsb on quads and the majority of people with them and 1800mhz RAM are having to settle at 400Mhz (1600Mhz). A bit of a bummer but with the QX quads and a unlocked multi then not too much of an issue with reard to raw speed.

I would like to proved wrong by anybody who has thier quad stable @ 450 fsb and ram at 1800Mhz but I am struggling to find many - if any