Panic over I have finally got to the bottom of my problem of not being able to run over prime blend over 400fsb on this board with a Q6600.

Please don't all kick me at once it was the dammed PSU playing up.

I had actually swapped out the PSU trying to eliminate it but I must have been too far off with my settings to notice the difference between a crash due to a PSU fault & an unstable crash

My old boss used to say things like this were character building & you know what I think I finally got what he was on about now although this has given me a Jackal & Hyde character as last night I was ready to put a hammer through this board fuming with rage yet now with the weight off my shoulders & the board priming at 450fsb I feel like kissing it.

CN